Identify the value of the CRITICAL VALUE(S) used in a hypothesis test of the following claim...
Identify the value of the CRITICAL VALUE(S) used in a hypothesis
test of the following claim and sample data:
Claim: "The average battery life (between charges) of this model of
tablet is at least 12 hours."
A random sample of 80 of these tablets is selected, and it is found
that their average battery life is 11.58 hours with a standard
deviation of 1.93 hours. Test the claim at the 0.05 significance
level.
| a. | -0.218 | b. | -1.645 |
|---|---|---|---|
| c. | -1.946 | d. | -1.667 |
Homework Answers
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Identify the value of the CRITICAL VALUE(S) used in a hypothesis
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15) Find the critical value that defines the rejection region for the following hypothesis test: Is...
15) Find the critical value that defines the rejection region for the following hypothesis test: Is the average life expectancy of Americans more than 78.8 years? To test this claim, a sample of 400 Americans are studied, with an average lifespan of 79.4 years and a standard deviation of 3.9 years. Use a significance level of 0.05. A) 1.649 B) 1.645 C) 3.08 D) -1.649 E) None of the Above 16) A large software company gives job applicants a test...
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also calculate: the critical
value(s), the test values, and reject/do not reject the
hypothesis
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15) Find the critical value that defines the rejection region for the following hypothesis test: Is the average life expectancy of Americans more than 78.8 years? To test this claim, a sample of 400 Americans are studied, with an average lifespan of 79.4 years and a standard deviation of 3.9 years. Use a significance level of 0.05. A) 1.649 B) 1.645 C) 3.08 D) -1.649 E) None of the Above 16) A large software company gives job applicants a test...
15) Find the critical value that defines the rejection region for the following hypothesis test: Is the average life expectancy of Americans more than 78.8 years? To test this claim, a sample of 400 Americans are studied, with an average lifespan of 79.4 years and a standard deviation of 3.9 years. Use a significance level of 0.05. A) 1.649 B) 1.645 C) 3.08 D) -1.649 E) None of the Above 16) A large software company gives job applicants a test...
Use the given claim to identify the Null Hypothesis, the Alternative Hypothesis, test statistics, P-value or Critical Values, then state the conclusion about the null hypothesis as well as the final conclusion that addresses the original claim The Brazil vending machine dispenses coffee, and a sample random sample of 27 filled cups have contents with a mean of 7.14 oz. and a standard deviation of 0.17 oz. Use a 0.05 significance level to test the claim that the machine dispenses...
Test the following claim. Identify the null hypothesis, alternative hypothesis, test statistic, critical value(s), conclusion about the null hypothesis, and final conclusion that addresses the original claim. A manual states that in order to be a hit, a song must be no longer than three minutes and thirty seconds (or 210 seconds). A simple random sample of 50 current hit songs results in a mean length of 252.5 sec. Assume the population standard deviation of song lengths is 53.5 sec....
also calculate: the critical
value(s), the test values, and reject/do not reject the
hypothesis
The average sales price of new one-family houses in the Midwest is $252,400 and in the South is $259,500. A random sample of 36 houses in each region was examined with the following results. At the 0.05 level of significance, can it be concluded that the difference in mean sales price for the two regions is greater than $3400? Midwest South Sample size 36 36 Sample...
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