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A bank conducts a survey in which it randomly samples 400 of its customers. The survey asks the customers which way they use the bank the most; (1) interacting witha a teller at the bank, (2) using ATMs, or (3) using the bank's Internet banking service. It also asks their level of satisfaction with the service they most often use (on a scale of 0 to 10 with 0 = very poor and 10 = excellent). Does mean satisfaction differ according to how they most use the bank? a. Indentifying notation, state the null and alternative hypotheses for conductiing an ANOVA with data from the survey. b. Report the df values for this ANOVA. About what range of F test statistic values give a P-value below 0.05? c. For the data, F=0.46 and the P-value equals 0.63. What can you conclude? d. What were the assumptions on which ANOVA was based? Which assumption is the most important?
Enrollment for the last four semesters had been 120, 126, 110, and 130. Develop a forecast of enrollment next semester.
When selecting 3 different side dishes from the 16 available choices. What was the incorrect number stated by Joe Montana in the ad?
The population standard deviation was 1.7 years using .95 degree of confidence what is the confidence interval for the population mean?
Each,day Monday through Saturday, a baker bakes three large chocolate cakes and those not sold on the same day are given away to a food bank.
A U.S. Travel Data Center survey of 1500 adults found that 42% of respondents stated that they favor historical sites as vacations. Find the 99% confidence interval of the true proportion of adults who favor visiting historical sites as vacations.
The accomanying table is a one way, independent groups ANOVA summary table with part of material missing.assuming an equal number of subject are there in each group. What is the value of F crit, using alpha 0.05?
Assume that the measurements came from a normal distribution. The variability of the manufacturing process is unknown means the same as the standard deviation is unknown.
At.02 significance level is it sensible to conclude that mean number of shoes sold at mall stores is larger than at outlet stores?
Although the two samples have an identica winning percentage,one is significant and the other is not. Explain why the two samples lead to different conclusions.
would this prove that they are exceeding their goal, using = .025?
Which ones are testable and which ones are not testable? Select one claim and develop the null and alternate hypotheses and suggest a possible method of testing the hypothesis and measuring your concept.
f no more than 5% of the containers are to weigh less than 15.8 oz, what must the standard deviation of the weights equal?
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