A state school administrator says that the standard, Ask an Expert

Statistics

A state school administrator says that the standard deviation of test scores for eighth grade students who took a U.S. history assessment is less than 30 points. You work for the administrator and are asked to test this claim. You randomly select 25 tests and find that the tests have a standard deviation of 33.6 points. At a = 0.05, complete a hypothesis test to find out if you can support the administrator's claim.

1. List Ho and Ha (Note : Remember you are not testing the mean, so "Y" should not be used)

2. Find the critical value(s)

3. Find X(2), the standardized test statistic

4. Decide whtether to reject or fail to reject the null hypothesis

5. Interpret the decision in the context of the original claim.

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M91007780

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

Ecolap inc ecl recently paid a 046 dividend the dividend is

Ecolap Inc. (ECL) recently paid a $0.46 dividend. The dividend is expected to grow at a 12.50 percent rate. The current stock price is $49.72. What is the return shareholders are expecting?

Suppose a machine has two components that prevent injury

Suppose a machine has two components that prevent injury; component A and component B. If either of the components fail, an employee will be injured. It is important to note that both A and B cannot fail at the same tim ...

Suppose that a b and c are events in a sample space s such

Suppose that A, B and C are events in a sample space S, such that: A and B are equally likely; C is four times as likely as B; B and C are independent; if either B or C occurs, then A cannot occur; at least one of A, B o ...

Compute the present value of an 1150 payment made in ten

Compute the present value of an $1,150 payment made in ten years when the discount rate is 12 percent. (Do not round intermediate calculations. Round your answer to 2 decimal places.)

Problem 1 you toss a coin ten times and observe the

Problem 1. You toss a coin ten times and observe the sequence of heads and tails that results. a. How many possible outcomes are there? b. What's the probability that you will get at least one "heads"? Problem. An urn co ...

Suppose you want to estimate the proportion of traditional

Suppose you want to estimate the proportion of traditional college on your campus who own their own car. Based on some research on other campuses, you believe the proportion will be near 25%. What sample size is needed i ...

Ye observed the following returns over timeyear

You have observed the following returns over time: Year BMG Market 1990 18% 13% 1991 4% 8% 1992 -12% 3% 1993 16% 10% 1994 18% 11% What is the beta for BMG?

Two fair dice are rolled and the sum of the points is noted

Two fair dice are rolled and the sum of the points is noted. Find the probability that the sum is 6 given that at least one of the numbers is less than 3.

Explain the similarities and differences between bagging

Explain the similarities and differences between "bagging" and "boosting" in predictive analytics.

Find the modified internal rate of return mirr the annual

Find the modified internal rate of return (MIRR) The annual rate is 8.24%. Initial outlay is $356,800. Year 1: $163,100 Year 2: $173,100 Year 3: $181,300 Year 4: $175,700 Year 5: $161,400

4,153,160 Questions Asked
13,132 Experts
2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Recent Questions

Ask Statistics and Probability Expert

Statistics

Related Questions in Statistics and Probability

Ecolap inc ecl recently paid a 046 dividend the dividend is

Suppose a machine has two components that prevent injury

Suppose that a b and c are events in a sample space s such

Compute the present value of an 1150 payment made in ten

Problem 1 you toss a coin ten times and observe the

Suppose you want to estimate the proportion of traditional

Ye observed the following returns over timeyear

Two fair dice are rolled and the sum of the points is noted

Explain the similarities and differences between bagging

Find the modified internal rate of return mirr the annual

Ask Experts for help!!

Looking for Assignment Help?

Why might a bank avoid the use of interest rate swaps even

Describe the difference between zero coupon bonds and

Compute the present value of an annuity of 880 per year

Compute the present value of an 1150 payment made in ten

Compute the present value of an annuity of 699 per year

Follow Us