1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
IrinaK [193]
3 years ago
12

A guidance counselor at a university career center is interested in studying the earning potential of certain college majors. He

claims that the proportion of graduates with degrees in engineering who earn more than $75,000 in their first year of work is not 15%. If the guidance counselor chooses a 5% significance level, what is/are the critical value(s) for the hypothesis test? 2010 20.05 20.025 1.960 20.01 2.326 20.005 2.576 1.282 1.645 Use the curve below to show your answer. Select the appropriate test by dragging the blue point to a right, left- or two tailed diagram. The shaded area represents the rejection region. Then, set the critical value(s) on the z-axis by moving the slider.
Mathematics
1 answer:
butalik [34]3 years ago
8 0

Answer:

For the critical value we know that the significance is 5% and the value for \alpha/2 = 0.025 so we need a critical value in the normal standard distribution that accumulates 0.025 of the area on each tail and for this case we got:

Z_{\alpha/2}= \pm 1.96

Since we have a two tailed test,  the rejection zone would be: z or z>1.96

Step-by-step explanation:

Data given and notation

n represent the random sample taken

\hat p estimated proportion of interest

p_o=0.15 is the value that we want to test

\alpha=0.05 represent the significance level

Confidence=95% or 0.95

z would represent the statistic (variable of interest)

p_v represent the p value (variable of interest)  

Concepts and formulas to use  

We need to conduct a hypothesis in order to test the claim that the proportion of graduates with degrees in engineering who earn more than $75,000 in their first year of work is not 15%.:  

Null hypothesis:p=0.15  

Alternative hypothesis:p \neq 0.15  

When we conduct a proportion test we need to use the z statistic, and the is given by:  

z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}} (1)  

The One-Sample Proportion Test is used to assess whether a population proportion \hat p is significantly different from a hypothesized value p_o.

For the critical value we know that the significance is 5% and the value for \alpha/2 = 0.025 so we need a critical value in the normal standard distribution that accumulates 0.025 of the area on each tail and for this case we got:

Z_{\alpha/2}= \pm 1.96

Since we have a two tailed test,  the rejection zone would be: Z or z>1.96

You might be interested in
The length of a rectangle is 11 in. longer than its width. the perimeter of the rectangle is 86 in.write and solve an equation t
Tcecarenko [31]
I hope this helps you


width w


length w+11



perimeter =2 (width +length )


86=2 (w+w+11)


43=2w+11


32=2w


w=16

length = w+11=16+11=27
6 0
3 years ago
Plss help i’ll give brainliest thank you!
Art [367]

Answer:

its 45 as3*15 is 45 and 45*1 is 45

plz mark me branliest

5 0
3 years ago
Read 2 more answers
I need help with 18-19​
Svet_ta [14]

Answer:

18-19= -1  

Step-by-step explanation:

18-19=-1

Sweetheart, you cant subtract a smaller number from an bigger number or it will be a negitive number so the answer is -1

8 0
2 years ago
Read 2 more answers
10 POINTS Brainliest!!!
Valentin [98]

Answer:

Neither

Step-by-step explanation:

Can be determined because there is enough information (Length, width, and height).

Not congruent because from the picture itself, the figures are in different sizes.

Not similar because:

The height ratio is not the same as the ratios of other dimensions.

1 : 4 is not similar to 6 : 12 and 4 : 8

3 0
3 years ago
Does anybody know any of these work needs to be shown answer ASAP
fenix001 [56]
#30 and #31 are in y = mx + b. m = slope, and b = y-intercept.
30. slope = 2/3 y-intercept = 1
31. Slope =  -9/5 y-intercept = -4
To make the x's get on the right side of the equal sign, subtract it on both sides.
32. 6x - y = -2
32. 6x - y - 6x = -2 - 6x
32. y = 6x - 2
5 0
3 years ago
Other questions:
  • Someone’s mother has four sons. North, South and East. What is the name of the fourth son. Private message me the name of the fo
    15·2 answers
  • What is the slope and y intercept of the line y= 4x -12-2x?
    8·2 answers
  • Which equation is the correct translation of the following statement? Four less than a number is nine.
    8·1 answer
  • Find the value of y in the triangle
    8·2 answers
  • How can we factorise the expression: 2x^6+17x^3+8?​
    15·1 answer
  • Determine which consecutive integers do not have a real zero of between them. a. (–6, –5) c. (–2, –1) b. (–5, –4) d. (1, 2) Plea
    9·1 answer
  • Solve a triangle when A=40°, B=59°, and c=14.
    12·1 answer
  • Sara is painting her house. to paint the second floor, she needs to lean her 15 foot ladder against her house to reach a point t
    15·1 answer
  • Remake of steps to graph a line, if equation is 2x+4y=8
    14·1 answer
  • A team of 9 tennis players can order bags with their uniforms
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!