P-value for average age of evening students

Assignment Help Basic Statistics
Reference no: EM13109862

Show all work.

At a local university, sample of 49 evening students was selected in order to determine whether the average age of evening students is significantly different from 21. The average age of students in the sample was 23 with a standard deviation of 3.5.

-Formulate the hypotheses for this problem

-Computer the test statistic

-Determine the p-value and these hypotheses (let a = .05)

Reference no: EM13109862

Questions Cloud

What constraints added to two resulting lp problems : A company will be able to obtain a quantity discount on component parts for its three products, X1, X2 and X3 if it produces beyond certain limits.
Explain independent sample and related sample : What is meant by an independent sample? What is a related sample? When should researchers use different hypothesis tests for independent and related samples?
Hypothesis testing-p-value-confidence level : A random sample of 16 students selected from the student body of a large university had an average age of 25 years and a standard deviation of 2 years.
Determine is drug effective at given alpha value : A statistical study reported that the drug was effective with the p-value of .042. Is this true? The effective sample may be found about 42 times in 1000 samples.
P-value for average age of evening students : At a local university, sample of 49 evening students was selected in order to determine whether the average age of evening students is significantly different from 21. The average age of students in the sample was 23 with a standard deviation of 3..
Critical value approach-p- value approach for sample : A sample of 30 cookies is taken to test the claim that each cookie contains at least 9 chocolate chips. The average number of chocolate chips per cookie in the sample was 7.8 with a standard deviation of 3.
Sample mean-standard deviation-hypothesis : A group of young businesswomen wish to open a high fashion boutique in a vacant store, but only if the average income of households in the area is at least $25,00.A random sample of 9 households showed the following results:
Compute the t-value and null hypothesis : Digital camcorder repair service has set the goal not to exceed average of 5 working days from time unit is brought in to time repairs are completed. Compute the t-value.
Determine the bottleneck of the pm line : A powder metal (PM) manufacturing line produces bushing in three steps, compaction, sinter-harden, and rough/O?nish turn, which are accomplished at three single machine stations with average processing times of 12, 10 and 6 minutes, respectively.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Real world value of the y-intercept

What is the real world value of the y-intercept and slope in a regression equation? Other than statistics problems, why should I care?

  Probability related to satisfaction with the airlines

Find the probability taht exactly 6 are satisifed with the airlines. Find the probability that fewer than 4 are satisfied with the airlines. Find the probability that 5 or more are satisfied with the airlines. Find the probability that between 3 a..

  Normal disrtibution of fish lengths

Use normal disrtibution of fish lengths for which the mean is 8 inches and the standard deviation is 5 inches. Assume the variable x is normally distributed.

  Determine interval estimate for the mean of population

A local university administers a comprehensive examination to the recipients of a B.S. degree in Business Administration. A sample of 5 examinations are selected at random and scored. The test scores are 56, 85, 65, 86, and 93. At 98% confidence, ..

  Probability-binomial tends to normal

Effectiveness White flies are devastating California crops. An area infested with white flies is to be sprayed with a chemical which is known to be 98% effective for each application.

  Baseline characteristics between treatment groups

Are there any statistically significant differences in baseline characteristics between treatment groups? Justify your answer. Write the hypotheses and the test statistic used to compare ages between groups. (No calculations - just H 0 , H 1 and for..

  Nonprobability sample

Your task is to interview a representative sample of attendees for the large concert venue where you work. The new season includes 200 live concerts featuring all types of musicians and musical groups.

  Trials of a binomial experiment result

Suppose that n trials of a binomial experiment result in no successes.

  Computing and interpreting suitable measure of association

Draw the suitable 2x2 table, compute and interpret suitable measure of association.

  Difference between satisfaction levels of mid country

Using a 5% level of significance, can  we say that, generally there is important difference between satisfaction levels of mid country residents and coastal residents?

  Question on joint distribution

Tim has two more problems to solve on his test, but he doesn't know how long it will take to finish them. He assigns mutually irrelevant normal distributions to the times

  Find the probability - mean starting salary

What is the probability that the mean starting salary is between $31,000 and $33,000 - Graduates from a graphic arts course at a community college have a mean starting salary

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd