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Chapter 9: Q. 38 (page 538)

What should you do when α>p-value?

Short Answer

Expert verified

We reject the entire hypothesis forα>p

Step by step solution

01

Introduction

A statistical hypothesis is a statement regarding the population's nature. It's frequently expressed as a population parameter. A statistical hypothesis that is to be tested is called a null hypothesis. Alternative hypothesis: a hypothesis that differs from the null hypothesis.

02

Explanation

When α>pvalue, we reject the null hypothesis.

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Most popular questions from this chapter

The cost of a daily newspaper varies from city to city. However, the variation among prices remains steady with a

standard deviation of 20¢. A study was done to test the claim that the mean cost of a daily newspaper is $1.00. Twelve costs

yield a mean cost of 95¢ with a standard deviation of 18¢. Do the data support the claim at the 1% level?

It is believed that Lake Tahoe Community College (LTCC) Intermediate Algebra students get less than seven hours of sleep per night, on average. A survey of 22 LTCC Intermediate Algebra students generated a mean of 7.24 hours with a standard deviation of 1.93 hours. At a level of significance of 5%, do LTCC Intermediate Algebra students get less than

seven hours of sleep per night, on average?

The TypeIIerror is not to reject that the mean number of hours of sleep LTCC students get per night is at least seven when,

in fact, the mean number of hours

a. is more than seven hours.

b. is at most seven hours.

c. is at least seven hours.

d. is less than seven hours.

A medical trial is conducted to test whether or not a new medicine reduces cholesterol by25%.State the null and alternative hypotheses.

The Weather Underground reported that the mean amount of summer rainfall for the northeastern US is at least 11.52 inches. Ten cities in the northeast are randomly selected and the mean rainfall amount is calculated to be 7.42 inches with a standard deviation of 1.3 inches. At the α=0.05 level, can it be concluded that the mean rainfall was below the reported average? What if α=0.01? Assume the amount of summer rainfall follows a normal distribution.

A sleeping bag is tested to withstand temperatures of-15°F. You think the bag cannot stand temperatures that low. State the Type I and Type II errors in complete sentences.
See all solutions

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