State the null and alternative hypothesis in each case.

(a) A hypothesis test will be used to potentially provide evidence that the population mean is more than 10.

(b) A hypothesis test will be used to potentially provide evidence that the population mean is not equal to 7.

(c) A hypothesis test will be used to potentially provide evidence that the population mean is less than 5.

UNIT 10 – Testing Hypothesis About Proportions Standardized Value (z-score, z*) – # of standard deviations an observation lies away from the mean Z = pp̂ – p = ( value – mean ) √ pq ÷ n standard deviation Hypothesis – statement about the population distribution parameter (ex: p), usually claims the parameter takes on a specific value Class Example: Study to see in...