Many hotel chains that offer free Wi-Fi service to their customers have experienced increasing demand for Internet bandwidth and increasing costs.
Marriott International would like to test the hypothesis that the proportion of customers that are carrying two Wi-Fi devices exceeds 0.60. A random sample of 120 Marriott customers found that 78 have two Wi-Fi devices. Marriott International would like to set = 0.01. The critical value for this hypothesis test would be ________.A) 1.28
B) 1.645
C) 2.33
D) 1.96
Q. 2A coefficient of determination equal to zero indicates that there is no relationship between the independent and dependent variables.
Indicate whether the statement is true or false
Q. 3A population mean is an example of a statistic.
Indicate whether the statement is true or false
Q. 4The correlation coefficient measures the percentage of the total variation of the dependent variable that is explained by the independent variable from a sample.
Indicate whether the statement is true or false
Q. 5The _________________ provides an estimate for the population variance if the null hypothesis is true for one-way ANOVA.
A) sum of squares error
B) total sum of squares
C) mean square between
D) mean square within
Q. 6Proportion data follow the ________ distribution, which can be approximated by the ________ distribution under the following conditions: and .
A) exponential, binomial
B) binomial, normal
C) Poisson, normal
D) normal, exponential
Q. 7An Internet poll, where individuals may respond to a survey as many times as they choose to, is an example of a nonprobability sample.
Indicate whether the statement is true or false
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