Complete Question
Newly purchased automobile tires of a certain type are supposed to be filled to a pressure of 30 psi. Let μ denote the true average pressure. Find the P-value associated with each of the following given z statistic values for testing H0: μ = 30 versus Ha: μ 30 when σ is known. (Give the answers to four decimal places.)
calculate for each
(a) z = 2.30
(b) z = -1.7
Answer:
a
[tex]p-value = 0.021448[/tex]
b
[tex]p-value = 0.08913[/tex]
Step-by-step explanation:
From the question we are told that
The population mean is [tex]\mu = 30 \ psi[/tex]
The null hypothesis [tex]H_o : \mu = 30[/tex]
The alternative hypothesis is [tex]H_a : \mu \ne 30[/tex]
Considering question a
Here the test statistics is (a) z = 2.30
From the z table the probability of (Z > 2.30) is
[tex]P(Z > 2.30 ) = 0.010724[/tex]
Generally the p-value is mathematically represented as
[tex]p-value = 2 * P(Z > 2.30 )[/tex]
=> [tex]p-value = 2 * 0.010724[/tex]
=> [tex]p-value = 0.021448[/tex]
Considering question b
Here the test statistics is (a) z = -1.7
From the z table the probability of (Z < -1.7) is
[tex]P(Z < -1.7 ) = 0.044565[/tex]
Generally the p-value is mathematically represented as
[tex]p-value = 2 * P(Z < -1.70 )[/tex]
=> [tex]p-value = 2 * 0.044565[/tex]
=> [tex]p-value = 0.08913[/tex]
If m∠2 = 42 and m∠6 = 126, what is m∠4?
Answer:
D.) 138
Step-by-step explanation:
It cannot be the others because it is a big obtuse angle.
Answer:
D.) 138
Step-by-step explanation:
It cannot be the others because it is a big obtuse angle.
Jillian's grandfather gave her 1 jelly bean on Monday, 2 jellybeans on Tuesday, 4 jellybeans on Wednesday, and 8 jellybeans on Thursday. Is it a linear function?
Answer:
yes
Step-by-step explanation:
Find the explicit equation for the given sequence:
-21, -14, -7, 0, . . .
Answer:
7 mark above answer brilliant
Is anyone willing to answer this question I’m lost
Answer:
because the other points are not the point of intersection.
Which statement describes the graph of this polynomial function?
f(x)= x4 + x3 - 2x2
Answer:
NOT c
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
The graph crosses the x-axis at x = 2 and x = –1 and touches the x-axis at x = 0.
The graph touches the x-axis at x = 2 and x = –1 and crosses the x-axis at x = 0.
The graph touches the x-axis at x = –2 and x = 1 and crosses the x-axis at x = 0.
Tyler is driving to visit his grandmother. it takes him 5hours to travel 260 miles. how fast was Tyler driving
alfredo ha 3 coins in his pocket. the value of the coin is $0.31
what 3 coins are in his pocket?
Answer:
quarter, nickel, and a penny
Step-by-step explanation:
you need to add up to 31 but you can only use 3 coins so 25, 5, and 1 make 31.
Using the diagram to the right, which statement do you KNOW is true (E is between J and N)?
A JE = EN
B. JN = EJ - NU
C. JE-EN = JN D. JN + JE = EN
Answer:
5. Answer C is right for sure.
6. JN=JE+EN
Step-by-step explanation:
A restaurant sells a coffee refill mug for $6.75. Each refill cost $.1.25. Last month, Keith spent $31.75 on a mug and the refills. How many refills did Keith purchase last month? Write and solve an equation to determine the number of refills, r, that Keith purchased.
Answer:
He purchase 20 times.
Step-by-step explanation:
1.25(r)+6.75
1.25(20)+6.75
25+6.75=$31.75
75/1+15e^-0.4x=25 solve for x
Answer:
[tex]\frac{75}{1}+15e^-\cdot \:0.4x=25\quad :\quad x=-\frac{25}{3};\quad \ne \mathrm{True},\:e\ne \:0\quad \left(\mathrm{Decimal}:\quad x=-8.33333\dots \right)[/tex]
Step-by-step explanation:
[tex]\frac{75}{1}+15e^-\cdot \:0.4x=25[/tex]
[tex]\mathrm{Apply\:rule}\:\frac{a}{1}=a[/tex]
[tex]\frac{75}{1}=75[/tex]
[tex]75+15\cdot \:0.4e^-x=25[/tex]
[tex]\mathrm{Multiply\:the\:numbers:}\:15\cdot \:0.4=6[/tex]
[tex]75+6e^-x=25[/tex]
[tex]\mathrm{Subtract\:}75\mathrm{\:from\:both\:sides}[/tex]
[tex]75+6e^-x-75=25-75[/tex]
[tex]\mathrm{Simplify}[/tex]
[tex]6e^-x=-50[/tex]
[tex]\mathrm{Divide\:both\:sides\:by\:}6e^-;\quad \ne \mathrm{True}[/tex]
[tex]\frac{6e^-x}{6e^-}=\frac{-50}{6e^-};\quad \ne \mathrm{True}[/tex]
[tex]\mathrm{Simplify}[/tex]
[tex]e^{ }x=-\frac{25}{3e^-};\quad \ne \mathrm{True}[/tex]
[tex]\mathrm{Divide\:both\:sides\:by\:}e;\quad \ne \mathrm{True},\:e\ne \:0[/tex]
[tex]\frac{e^{ }x}{e}=\frac{-\frac{25}{3e^-}}{e};\quad \ne \mathrm{True},\:e\ne \:0[/tex]
[tex]\mathrm{Simplify}[/tex]
[tex]\frac{x}{e}=-\frac{25}{3e^1};\quad \ne \mathrm{True},\:e\ne \:0[/tex]
[tex]\mathrm{Multiply\:both\:sides\:by\:}e[/tex]
[tex]\frac{xe}{e}=\left(-\frac{25}{3e^1}\right)e;\quad \ne \mathrm{True},\:e\ne \:0[/tex]
[tex]\mathrm{Simplify}[/tex]
[tex]x=-\frac{25}{3};\quad \ne \mathrm{True},\:e\ne \:0[/tex]
My from needs help and I’m slow please help
Answer:
y = -1x
Step-by-step explanation:
no y intercpt because it intercepted in the origin
Answer:
y=-x
Step-by-step explanation:
the other answer didn't include the negative so be careful! if it's going downwards then its always negative.
What Plus -11 gives me 15
Answer:
i think it's postive 26
Answer:
26.
Step-by-step explanation:
If you want to "cancel" out the -11, you add 11 to make it go to 0. Then, you add 15 to 11, because you have 11 over from when you moved to -11 to 0. 15 plus 11 is 26.
All lines that are parallel to JC
If John can drink 1 jug of water in 6 days and mary can drink one jug of water in 1w days how many days would it take them to drink it togethee
Answer:
1
Step-by-step explanation:
because mary can drink 1 jg in 7 days john can drink in six da7 if the drink it together itll go fatser
y=x-1 what is the slope and the y intercept help!!!!
Answer:
slope is 1 and the y intercept is -1
Answer: Slope is 1. Y intercept is -1
Step-by-step explanation: y=mx+b. m is the slope. b is the y intercept. If there’s nothing by the x it’s a 1
You have factored some polynomials using the Distributive Property and others were factored by grouping What are the
Similarities between each method
What is the equation of the axis of symmetry?
Easy please help
Answer:
[tex]-\frac{b}{2a}[/tex] is the equation for axis of symmetry.
Step-by-step explanation:
b is the second part of the quadratic equation and a is the first part.
For example, [tex]2x^{2} +6x + 4[/tex]
a is 2 and b is 6.
Plug in those values into the equation and then you get the axis of symmetry.
Solve: -5n + 6(5n - 5) = 38 + 8n
what is the slop of the line that contains the points (-2,7) and (2,3) ?
Answer:
The answer would be -1
Step-by-step explanation:
Slope = ∆y/∆x
= (y2- y1 )/(x2- x1)
y2=3
y1= 7
x2=2
x1= -2
= (3-7)/(2--2)
= -4/(2+2)
= -4/4
= -1
Answer:
nn
Step-by-step explanation:
Shasta owns 10 baseball cards. Each week she plans to add 6 cards to her collection.
a. Write a recursive routine (start value and operation) that describes the total number of
baseball cards Shasta will own based on the number of weeks she has been collecting
cards.
Answer:
.
Step-by-step explanation:
HELP OUT ASAP PLEASE!
on the right side should have been added to
Answer:
The graph should have closed not open circles
Step-by-step explanation:
Four types of hardware need to be distributed evenly
into boxes: 91 screws, 39 nuts, 39 bolts, and 143 nails.
How many boxes of hardware can be filled? How
many of each type of hardware will fill each box?
Answer:
I don't have an answer to this question but one tip is to try using GCF (greatest common factor)
it is a big help when I try to do math
I er uh need some assistance
Answer:
6
Step-by-step explanation:
16/2.5 = 6.4, but you have to round down because you cant chop a book into tenths, so 6
What is the quotient in simplest form?
StartFraction 8 Over 3 EndFraction divided by two-thirds
0
StartFraction 9 Over 16 EndFraction
1 and StartFraction 7 Over 9 EndFraction
4
HELPPPP
Answer:
4x square- 9 by 6plus 13x plisv16 plus 4square-- 1by 6x square plus x-2
1. 2x plus 3 by 3x plus 2
2.2x - 3 by2x plus1
3.2xplus3by2x- 1
4.3xplus2by2xplus1
-4 belongs to which of the following sets of numbers?
A. integers
B. irrational numbers
C. rational numbers
D. whole numbers
Answer:
integer
Step-by-step explanation:
Integer is classified as a whole number, whole number is classified as an integer.
What is the slope of the line that passes through the points (5,-11) and (-9,17)
Yesterday, the temperature at noon was 8.7F. By midnight, the temperature had decreased by 20.6 degrees. What was the temperature at midnight
Answer:
-11.9 F
Step-by-step explanation:
Solve the equation
Y=2
then solve
W = -3 -2y
Answer:
w= -3-2*2 = -7
Step-by-step explanation:
make it braintliest please
Solve the equation for x.
(x - 4) - (x + 7) = 8x
a. -11/8 b -1/8 c -11/2 d -11/4
Answer:
-11/8
Step-by-steexplanation:
While hiking, Sandra went up 120 meters. If Sandra started at 800 meters above sea
level, what is her elevation now?
The Answer:
If Sandra started at 800 meters and went up 120, the answer would be 920.
Step-by-step explanation:
First, simply add 800 meters, which is what she started with. Next, since she has gone up 120 meters since then, and the question is asking us what her elevation is NOW, you can add 800 + 120 to get 920. This question is solved by using addition.
Hope this helps!