Test the claim that the mean GPA of night students is smaller than 2.2 at the 0.01 significance level.The null and alternative hypothesis would be:Ho: µ = 2.2 Ho:µ > 2.2 Ho:p > 0.55 Ho:p = 0.55 Ho:p<0.55 Ho:µ < 2.2H1: µ + 2.2 H:H < 2.2 H1:p < 0.55 H1:p 0.55 H1:p> 0.55 H1:µ > 2.2The test is:left-tailed right-tailed two-tailedBased on a sample of 40 people, the sample mean GPA was 2.15 with a standard deviation of 0.04The test statistic is:(to 2 decimals)The p-value is:(to 2 decimals)Based on this we:O Reject the null hypothesisO Fail to reject the null hypothesis

Answered: Image /qna-images/answer/5b2e15e2-210b-43bf-b75b-5fda5ea5a5d4.jpgAs p value < alpha We Reject H0

Answered: Based on a sample of 40 people, the…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Similar questions

F60. The mean and the standard deviation of one sample are respectively 54.4 and 8; the mean and the standard deviation of another sample are 50.3 and 7 respectively. The size of the first sample is 50 and that of the second is 100. Find the mean and standard deviation of the composite sample (size 150) combining the aforesaid two samples.
A group of students take a exam and the adverage was m = 90 and the standard deviation was 7.8. Answer the questions using raw scores, z scores and creating a curve. what percentage of the population lands between the raw scores of 86 and 105?
Records on a fleet of trucks reveal that the average life of a set of spark plugs is normally distributed with a mean of 22,100 miles. The fleet owner purchased 18 sets and found that the sample average life was 23,400 miles; the sample standard deviation was 1,412 miles. To decide if the sample data support the company records that the spark plugs average is LESS THAN 22,100 miles, state your decision in terms of the 6 steps. Use a 0.025 level of significance. 1, define h0 and h1 2. define Alpha 3. which Test, T or Z? 4. decision role, with the picture if necessary. 5. calculate sample test and reach your decision, reject h0 or fail to reject h0 6. conclusion based on the problem.
A large chemistry course took their final exam. The mean was 75 with a standard deviation of 8. What proportion of people scores in the A range (90 or above)?
Assume that all conditions are met. The mean of the differences was 1.33 and the standard deviation of those differences was 2.90. What is the test statistic for this procedure?
What is the value of the test statistics ? Round to decimal two if needed
The frequency distribution was obtained using a class width of 0.5 for data on cigarette tax rates. Use the frequency distribution to approximate the population mean and population standard deviation. Compare these results to the actual mean u= $1.885 and standard deviation o = $1.115. E Click the icon to view the frequency distribution for the tax rates. The population mean is S (Round to three decimal places as needed.)
On a nationwide math test, the mean was 58 and the standard deviation was 4. If Roberto scored 70, what was his z-score? Use the formula Z where is the mean, o is σ the standard deviation, and x is Roberto's score. Round to 4 decimal places. X н =
The amount of trash generated by US households (in lbs per day) is normally distributed. You take a sample of 10 people. The sample average is xbar=10.91 lbs, and the sample standard deviation is s=4.736. What is the 99% Conf. Int. for the mean? Group of answer choices a. 6.04 to 15.78 b. 8.33 to 13.49 c. 8.09 to 13.73 d. 7.74 to 14.08
the golf scores for a school team were normally with a mean of 68 and a standard deviation of 3. Use the Z-table to find the value of k so that 40% of the score are greater than k
i need the answer quickly
You perform a one-sample t test and calculate a t statistic of 3.0. The mean of your sample was 1.3 and the standard deviation was 2.6. How many participants were used in this study?

SEE MORE QUESTIONS

Recommended textbooks for you

A First Course in Probability (10th Edition)

Probability

ISBN:

9780134753119

Author:

Sheldon Ross

Publisher:

PEARSON

A First Course in Probability

Probability

ISBN:

9780321794772

Author:

Sheldon Ross

Publisher:

PEARSON

A First Course in Probability (10th Edition)

Probability

ISBN:

9780134753119

Author:

Sheldon Ross

Publisher:

PEARSON

A First Course in Probability

Probability

ISBN:

9780321794772

Author:

Sheldon Ross

Publisher:

PEARSON

SEE MORE TEXTBOOKS

Based on a sample of 40 people, the sample mean GPA was 2.15 with a standard deviation of 0.04 The test statistic is: (to 2 decimals) The p-value is: (to 2 decimals) Based on this we: