Questions from Business Statistics

Q: The eastern factory had 28 accidents last year, out of a

The eastern factory had 28 accidents last year, out of a workforce of 673. The western factory had 31 accidents during this time period, out of 1,306 workers. a. Which factory had more accidents? Whic...

Q: One group of households was asked how satisfied they were with their

One group of households was asked how satisfied they were with their car, while the other group was asked how dissatisfied they were. Results are shown in Table 17.4.7. a. Which group was more likely...

Q: For each potential customer entering an auto showroom, the type of

For each potential customer entering an auto showroom, the type of vehicle desired is recorded. Table 17.4.1 shows data for the past week, together with percentages for the past year at this time. a....

Q: Last year at this time, your firm’s incoming telephone calls followed

Last year at this time, your firm’s incoming telephone calls followed the percentages shown in Table 17.4.2. a. Find the percentages for the first day of this month and compare them...

Q: Out of 267 roller skates randomly selected for close examination, 5

Out of 267 roller skates randomly selected for close examination, 5 were found to have a loose rivet, and 12 were not cleaned according to specifications. a. Use the formula for computing an expected...

Q: Your firm is considering expansion to a nearby city. A survey

Your firm is considering expansion to a nearby city. A survey of employees in that city, asked to respond to the question “Will business conditions in this area get better, stay the...

Q: Refer to the data for problem 5. a. What

Refer to the data for problem 5. a. What does the null hypothesis of independence claim, in practical terms, for this situation? b. How many managers responding “Worseâ€&#...

Q: Refer to the data for problem 5. a. Find

Refer to the data for problem 5. a. Find the critical value from the chi-squared table for the 5% level and report the result of the chisquared test. b. Find the critical value from the chi-squared ta...

Q: Consider the results of a small opinion poll concerning the chances of

Consider the results of a small opinion poll concerning the chances of another stock market crash in the next 12 months comparable to the crash of 1987, shown in Table 17.4.4. a. Fill in the â&#...

Q: Use a nonparametric test to see whether the distribution of annual salaries

Use a nonparametric test to see whether the distribution of annual salaries for men differs significantly from the distribution for women.