Statistics Week 5
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For the statement below, write the claim as a mathematical statement. State the null and alternative hypotheses and identify which represents the claim. A laptop manufacturer claims that the mean life of the battery for a certain model of laptop is more than 5 hours
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Part A is just stating the the claim numberically with is u >5. Part B = Ho is the...

Match each Pvalue with the graph that correctly displays its area.
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Pequals=0.2709 Pequals=0.0793 Pequals=0.0286 Pequals=0.0143 see excel spreadsheet. This your answer

In a random sample of 25 people, the mean commute time to work was 30.4 minutes and the standard deviation was 7.3 minutes. Assume the population is normally distributed and use a tdistribution to construct a 99 confidence interval for the population mean muμ. What is the margin of error of muμ? Interpret the results.
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Determine whether to reject or fail to reject Upper H 0 at the level of significance of a) alpha equals 0.02 and b) alpha equals0.09.
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Upper H H0: mu μ equals=109 Upper H Subscript aHa: mu μ not equals≠109 and P =0.02080.0208. see excel spreadsheet. This your answer

Find the margin of error for the given values of c, sigma, and n.
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c = 0.95. a = 2.1, n = 36 Answer 0.686

Construct the confidence interval for the population mean u.
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c = 0.95. x = 9.2. a = 0.4. and n = 59 A 95% confidence interval for p...