Question

Consider the following hypotheses: HO: 4 = 7,500 HA: 7,500 The population is normally distributed with a population standard deviation of 750. Compute the value of the test statistic and the resulting p-value for each of the following sample results. For each sample, determine if you can "reject/do not reject" the null hypothesis at the 10% significance level. (You may find it useful to reference the appropriate table: z table or t table) (Negative values should be indicated by a minus sign. Round intermediate calculations to at least 4 decimal places. Round "test statistic" values to 2 decimal places and "p-value" to 4 decimal places.) Test statistic p-value a. b. c. d. X = 7,590; n = 100 x = 7,590; n = 250 x = 7,230; n = 37 X = 7,330; n = 37 ((Click to select) ( (Click to select) ( (Click to select) ( (Click to select)

Answer 1

Test statistic | p-value Decision about null hypothesis a 1.20 1.90 1 = 7,590; n=100 X = 7,590; n=250 = 7,230; n=37 i = 7,330; n=37 0.2302 Do not reject 0.0574 reject 0.0286 reject 0.1676 Do not reject -2.19 C d -1.38