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Original claim:  The mean pulse rate (in beats per minute) of a certain group of adult males is 73 bpm. The hypothesis test results in a p-value of 0.0096. Assume a significance level of α = 0.01. State a conclusion about the null hypothesis.  

Sample data set:10        22        12        18        11        27        10        15The mean of the above data set is:

Identify the null hypothesis H0 and the alternative hypothesis HA. Use μ for a claim about a mean and p for a claim about a proportion. A student believes that the average grade on the final exam in statistics is less than 85 and she plans to test her belief. The correct set of hypotheses is:

Use the following table of algebra and calculus scores. Algebra (x)   36       46      45      43      32      30      22      47    Calculus (y)     77   92   87   81   71   63   53   88   If a hypothesis test was performed on the above data set,  what is the p-value (step 4 of the Linear Regression hypothesis test)?

Find the indicated probability. A bin contains 67 light bulbs of which 7 are defective. If 6 light bulbs are randomly selected from the bin with replacement, find the probability that all 6 selected bulbs are NOT defective.

Do one of the following, as appropriate: (a) Find the critical value , (b) find the critical value , (c) state that neither the normal nor the t distribution applies. 90%; n = 10; σ is unknown; population appears to be normally distributed.

Answer the question. Use the range rule of thumb for usual values: Minimum = Mean – 2 standard deviations and Maximum = Mean + 2 standard deviations Focus groups of 12 people are randomly selected to discuss products of the Yummy Company. It is determined that the mean number (per group) who recognize the Yummy brand name is 8.8, and the standard deviation is 0.85. Would it be unusual to randomly select 12 people and find that fewer than 5 recognize the Yummy brand name?

Solve the problem.In a certain town, 90 percent of voters are in favor of a given ballot measure and 10 percent are opposed. For groups of 220 voters, find the mean for the number who oppose the measure.

Examine the statement and tell what misuse of statistics may be involved:In a study of cold symptoms, every one of the subjects with a cold was found to be improved 2 weeks after taking ginger pills.  The study concludes that ginger pills cure colds.

Identify the level of measurement: Age of students in a statistics class is an example of a data on what level of measurement?