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Consider a random sample of size 20 from a normal population with hypothesized mean 1.618.
a. Write the four parts for a one-sided, left-tailed hypothesis test concerning the population mean with a 5 0.05.
b. Suppose x‾= 1.5 and σ = 0.45. Find the value of the test statistic, and draw a conclusion about the population mean.
c. Find the p value associated with this hypothesis test.
a recreational equipment supplier finds that among orders that include tents 40 also include sleeping mats. only 5 of
For this assignment, you will examine the use of qualitative data for a business scenario.
There are three loan officers at Farmer National Bank. All decisions on mortgage loans are made by one of these officers. The president of the bank would like to be sure that the rejection rate is about the same for the three officers.
The following data are the number of cars passing a point on a highway per minute: - Construct a stem-and-leaf display of these data. What does the display tell you about the data?
What are the null and alternative hypotheses for this test? Use ANOVA and the 0.05 level of significance in testing the null hypothesis identified in part (a).
Tests on a certain battery have determined that the mean (average) time until failure is 40 hours. Assume that the time T until failure of the battery is exponentially distributed. What is the probability that the battery will fail within 40 hours
Prepare an analysis of how you developed your instrument. The survey instrument is supposed to determine the level of self confidence in the participant.
an article recommended the following estimated regression equation for relating y vo2max lmin a measure of
Drug Store News (September2002) provided data on annual pharmacy sales for the leading pharmacy retailers in the United States. Show a stem-and-leaf display.
How many different ways to be appointed head of a division How many different ways could the three new heads be appointed?
Formulate a statistical hypothesis appropriate for the consumer groups purpose - Compute the mean average miles per gallon and compute the sample variance and sample standard deviation.
Suppose that we conduct a study on 10 people to test the comparability of these two methods. Data from these 10 people were obtained using both methods on each person. What is the criterion for the comparison? What is the null hypothesis? Should a..
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