Established for a reading comprehension test

Reference no: EM131137681

Rework Exercise 25, basing the decision on the P-value corresponding to the observed value of the test statistic.

Exercise 25

According to the norms established for a reading comprehension test, eighth graders should average 84.3 with a standard deviation of 8.6. If 45 randomly selected eighth graders from a certain school district averaged 87.8, use the four steps in the initial part of Section 1 to test the null hypothesis μ = 84.3 against the alternative μ > 84.3 at the 0.01 level of significance.

Q27;

The security department of a factory wants to know whether the true average time required by the night guard to walk his round is 30 minutes. If, in a random sample of 32 rounds, the night guard averaged 30.8 minutes with a standard deviation of 1.5 minutes, determine whether this is sufficient evidence to reject the null hypothesis μ = 30 minutes in favor of the alternative hypothesis μ 30 minutes. Use the four steps in the initial part of Section 1 and the 0.01 level of significance.

Reference no: EM131137681

Questions Cloud

Derive an equation for the excess pore water pressure : The excess pore water pressure at the top boundary is not zero because the sand layer was partially blocked. Derive an equation for the excess pore water pressure distribution with soil thickness and time.

The null and alternative hypotheses for this test : Test at the 0.05 level of significance whether the mean of a random sample of size n = 16 is "significantly less than 10" if the distribution from which the sample was taken is normal, = 8.4, and σ = 3.2. What are the null and alternative hypoth..

Why environmental health is an individual concern : This paper should demonstrate your understanding of the following the term environmental health. Why environmental health is an individual concern. Why environmental health is a global concern.

Calculate gross pay for an employee and display : Calculate gross pay for an employee and display the results. Your program will accept the employee's name, hours worked, and the employee's pay rate.

Established for a reading comprehension test : According to the norms established for a reading comprehension test, eighth graders should average 84.3 with a standard deviation of 8.6. If 45 randomly selected eighth graders from a certain school district averaged 87.8, use the four steps in th..

Why is the real interest rate uncertain : What is the one-year expected and actual real interest rate on the indexed bond?- Why is the real interest rate uncertain but the nominal interest rate known in this case?

Write the code to complete lines : Provide the application that helps users to calculate the area - what is static members in data type class and how to write static methods

Brandon is the marketing manager for local fitness center : Brandon is the marketing manager for a local fitness center. All of the following are good ways to build awareness and engage people with the fitness center to achieve communication objectives except A. social media B. sales promotions C. advertising..

Determine the maximum excess pore water pressure : The initial effective stresses on a saturated soil element at a certain depth in a soil mass are σ'1 5 80 kPa, σ'2 = 40 kPa, and σ'3 = 40 kPa. The groundwater level is below the depth of the soil element. A sudden outward movement of a retaining wal..

User Account

All Pages