Question: Consider the test Ho: =70 versus Ha: = 70 using a large sample of n = 400. Assume the standard deviation is 20 the mean

Consider the test Ho: =70 versus Ha: = 70 using a large sample of n = 400. Assume the standard deviation is 20 the mean = 72.5.

a) Find the test statistic

b) Find the p value

c) If alpha = .05, do you reject or fail to reject the null hypothesis?

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer
Step: 1 Unlock blur-text-image
Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock
Step: 3 Unlock

Students Have Also Explored These Related Mathematics Questions!

Q:

Consider the test Ho: =70 versus Ha: 70 using a large sample of n = 400. Assume the standard deviation is 20. Find the rejection region if alpha = .01

Q:

Consider the test H0: = 70 versus Ha: > 70 using a large sample of size n = 400. Assume s = 20. a. Describe the sampling distribution of x. b. Find the value of the test statistic if = 72.5. c....

Q:

1 If Sample size n = 64, sample standard deviation = 80. Sample mean = 100, Ho: Population mean = 115. The standardized test statistic ( Zc) =? 2 In a sample the mean = 40; Ho: Population mean = 43....

Q:

Essay type Questions Chapter 9 (11 points each for Ch 9 essay type) 1. A sample of 25 items yields X = 50.0 grams and s = 2.5 grams. Assuming a normal distribution, construct a 99 percent confidence...

Q:

Hi, can someone help me with these questions? Open Geogebra and choose "Probability Calculator.\" You can also get to this through the \"\\ew" menu. This opens in a new window (the online/app version...

Q:

Math 130 - 116 Final Exam A Name___________________________ Instructor________________________ Please show all work and round answers to 3 decimal places unless otherwise requested. Each answer is...

Q:

ID 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 Salary Compa- Midpoint ratio 57.7 27.3 35.5 60.9 47 72.8 41.8 21.8 76.3 22.5 22.8...

Q:

A research analyst believes that average back-to-school spending is more than a trade group's prediction of $500. Specify the null and alternative hypothesis. Question 1 options: A) Ho: 500 versus...

Q:

ID Salary Compa- Midpoint ratio Age Performance Service Gender Rating Raise Degree Gender Grade 1 Copy Employee Data set to this page. The ongoing question that the weekly assignments will focus on...

Q:

1. What does the test statistic tell you? It indicates how many standard errors a point estimate lies from the expected null hypothesis population value. It's another word for the p-value. It...

Q:

A company purchases inventory during the year in 4 batches, with unit and price amounts shown below: Batch 1 - 9,500 units @ $2.10 per unit Batch 2 - 4,300 units @ 2.08 per unit Batch 3 - 3,600 units...

Q:

Probability of Bankruptcy (Poisson Probability) An analyst predicted that 3.5% of all small corporations would file for bankruptcy in the coming year. For a random sample of 100 small corporations,...

Q:

2. Which of the following pieces of apparatus should be used to measure weight? (a) balance (b) force meter (c) metre ruler (d) thermometer

Q:

Your help will be highly appreciated... Acquisition and Trend Analysis In its 2018 10-K annual report, Microsoft Corporation reported the following revenues: Calculate the yearly revenue growth for...