Question: We ask whether a new version of our textbook is beneficial or detrimental to students learning statistics. On a national statistics exam, = 68.5

We ask whether a new version of our textbook is beneficial or detrimental to students learning statistics. On a national statistics exam, µ = 68.5 for students using other textbooks. A sample of students using this book has the following scores:
64 69 92 77 71 99 82 74 69 88
(a) What are H0 and Ha for this study?
(b) Compute tobt.
(c) With a = .05, what is tcrit?
(d) What do you conclude about the use of this book?
(e) Compute the confidence interval for µ.

Step by Step Solution

★★★★★

3.46 Rating (159 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

a H 0 685 H a 685 b S 2 X 1305 s x 130510 361 t obt 785 ... View full answer

Question Has Been Solved by an Expert!

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

Step: 2 Unlock

Step: 3 Unlock

Document Format (1 attachment)

569-M-S-O-T-S-E (651).docx

120 KBs Word File

Students Have Also Explored These Related Statistics Questions!

Suppose you see an advertisement for a new version of the iPhone that claims that it is less complex than older versions and allows you to complete tasks more quickly than the older versions. The ad...

A few months later, you are again approached by the same marketing director as in Exercise 3. This time, he has devised a better approach to measure the extent to which a customer prefers one product...

A university admissions officer regularly administers a test to all entering freshmen. A new version of the test is marketed by the testing company. To evaluate the new form, the admissions officer...

Assignment 11 Ch. 11: One Sample t-test Solve the following: 1. We ask whether a new version of our textbook is beneficial or detrimental to students learning statistics. On a national statistics...

We wonder whether a new version of our textbook is beneficial or detrimental to students learning statistics. On a national statistics exam, students usually score 70.25 on the exam using other...

1) In a study researchers found that the sample had aM=60, s 2 =25 and n=36. Given the population has a =60, what is the t value obtained from this study? 2) Given that =8.0. What is t obt if the...

We ask whether a new version of a textbook impacts students learning of statistics. On a national statistic exam students using the old textbook score 68.5. A sample of students using the new...

11.You ask whether this textbook is beneficial or detrimental to students learning statistics. On a national statistics exam, p- = 68.5 for students using other text books. A sample of students using...

A publisher develops a statistics textbook with a different layout from the typical textbook and was interested in whether the new layout was beneficial or detrimental to learning statistics. On a...

Comment on the following items relative to tax planning strategies of a fiduciary entity. a. To reduce taxes for a typical family, should income be shifted to a trust or from a trust? Why? b. From a...

Repeat exercise 11 for the acceptance sampling plan with n = 20 and c = 1. What happens to the producer's risk as the acceptance number c is increased? Explain. In exercise 11 Consider an acceptance...

Ayayal Corporation leases equipment from Falls Company on January 1 . 2 0 2 5 . The lease agreement does not transfer ownership. contain a bargain purchase option and is not a speclaliped asset. It...

Product placement is a harmless way to pay for a TV program, a movie, or some other form of media content. Do you agree with this statement? Why or why not?

In determining the necessary sample size in making an interval estimate for a population mean, it is necessary to first make an estimate of the population standard deviation. On what bases might such...

From past experience, a package-filling machine has been found to have a process standard deviation of 0.65 ounces of product weight. A simple random sample is to be selected from the machines output...

Based on a pilot study, the population standard deviation of scores for U.S. high school graduates taking a new version of an aptitude test has been estimated as 3.7 points. If a larger study is to...

Refer to the following mentioned data. (In millions) 2017 2016 2015 Net sales $ 34,487 $ 30,570 $ 26,899 Cost of products sold 14,701 13,805 13,515 Gross margin $ 19,786 $ 16,765 $ 13,384 Required:...

At the beginning of November, Yoshi Incorporated's inventory consists of 62 units with a cost per unit of $95. The following transactions occur during the month of November, November 2 Purchase 90...

Hello, I need some help with my accounting homework. I've missed classes because of a surgery I had done. PR 12-6A Statement of partnership liquidation OBJ. 4 On November 1, the firm of Sails, Welch,...