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Q1) In particular region of Cape Cod, it is known that lobstermen trap on average of 32 pounds of lobster per day with standard deviation of four pounds. If random sample of 30 lobster fishermen is selected, determine the probability that their average catch is less than 31.5 pounds?
Q2) To find out whether 2 categorical variables are independent, one must use the:
a) ANOVA test.
b) Tukey-Kramer multiple comparison procedure.
c) chi-square test.
d) F-test.
Q3) Given random variable is normally distributed with mean=$10 and s.d.=$5. For random variable X=$10, z-value is:
a) 1 b) 5 c) 2 d) 0
Q4) Area to right of mean of normal probability distribution is
a) 1 b) .25 c) .50 d) 0
Q5) If number of occurrences of some phenomenon has Poisson distribution, then time between occurrences has __________ distribution.
a) normal b) beta c) lognormal d) exponential
Determine the probability that between 5 and 10 minutes will pass between successive occurrences.
If the population standard deviation is s = 10, is the sample sufficient to demonstrate a significant effect? Again, assume a two-tailed test with a = 0.05.
The use of linear regression is a critical tool for a manager's decision-making ability. Please carefully read the example below and try to answer the questions in terms of the problem context.
Collapse the response categories in the following tables so that it meets the assumptions of the chi-square test; than perform the test.
Suppose the manufacturers claim is right, determine the probability the mean of sample is 47,840 miles or less?
Determine the variance of firm's profit for the month.
A teacher gave a 25 question multiple choice test. After scoring the tests, she computed a mean and standard deviation of the scores. The standard deviation was 0. Based on this information
Assume that demand for the upcoming weekend is normally distributed with a standard deviation of 30.
Complete the test at the 5% level of significance.
Stating assumptions on which your arguments and conclusions are based, sum up the statistical evidence regarding effectiveness of this diet.
If p denotes the p -value of the corresponding hypothesis test, which of the following is true?
Assume P1 and P2 move simultaneously. Represent this game in normal form.
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