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A hotel chain is interested in evaluating reservation processes. Guests can reserve a room by using either a telephone system or an online system that is accessed through the hotel's web site. Independent random samples of 80 guests who reserved a room by phone and 60 guests who reserved a room online were selected. Of those who reserved by phone, 57 reported that they were satisfied with the reservation process. Of those who reserved online, 50 reported that they were satisfied. Based on these data, is it reasonable to conclude that the pro- portion who are satisfied is higher for those who reserve a room online? Test the appropriate hypotheses using a = .05.
Test at the 5% level of significance whether the true mean time it takes for luggage to reach the travelers is less than 17 minutes. Determine the null hypothesis.
Use the central limit theorem to find the probability that the average number of moths in 30 traps is greater than 0.6. Give your answer to four decimal places.
To test whether the significant difference between two proportion test using large sample test.
The researcher also gathers data on age and major to see if there is any connection between these varibales and frequency of sexual harassment.
A repairable system consists of three non-identical components A, B,C , all of which must work for system success. When one component fails, no further component failures can occur. Construct the relevant state space diagram and hence evaluate gen..
The city are below $25,000. Find the mean of the annual household incomes of this city. It is assumed that the annual household incomes follow a normal distribution.
Describe a scenario related to the final project in which you would use repeated-measures ANOVA. Describe a scenario related to the final project in which you would use MANOVA.
the closing prices of two common stocks were recorded for a period of 16 days. the means and variances were xbar140.33
Cotton mouse density is not normally distributed. Observation has caused you to suspect that cotton mice achieve greater densities in forests than in old fields or swamps. State a hypothesis and a null hypothesis regarding your observation. Design..
an io psychologist asks employees to complete surveys measuring job satisfaction and organizational citizenship
Suppose that 51% of the women who gave birth at a certain hospital last year were over 30 years old, and that 39% were unmarried.
Tay-Sachs couples. Approximately 1 in 28 people of Ashkenazi Jewish descent are Tay-Sachs carriers. In randomly sampling one man and one woman from this population, what is the probability neither is a Tay-Sachs carrier?
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