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'"Consider the average home mortgage in New Zealand of $283 000 where the standard deviation of the mortgages is $50 000 and home mortgages are normally distributed. If a home is known to be more than $250 000, what is the probability that it is less than $280 000?"
Assuming the population is approximately normally distributed, and using the 0.05 level of significance, is the agent's suspicion confirmed?
Determine (a) an exact expression for the probability that not more than one defective item will be obtained and (b) an approximate expression
The distribution of test scores is mui=35 and a standard deviation of 15. Do students taking the supplement have significantly better memory scores? Use a one-tailed t-test with an alpha=0.05.
A marketing firm asked a random set of married and single men as to how much they were willing to spend for a vacation. At = .05, is a difference in the two amounts?
How would you accomplish this in the short run and what would happen to your efficiency? How would you most efficiently accomplish this in the long run?
Suppose 10 of the 20 stored works are by the same local artist. What is the probability that all 7 of the selected paintings will be by this artist?
School is about to begin. The janitor has all the lockers closed. All 1000 of them.
For each of the following, indicate whether the variable is ordinal or not. If the variable is not ordinal, indicate its variable type.
Think of a specific problem of comparing two treatments preferably from your own field. How would you organize an experiment to find out which
Use the Histogram option in Data Analysis to check the assumption of normality. Comment on the findings.
deduce that these two random variables are independent
The problem related to Statistics and it explain about analyzing the data for statistical difference in the weight of male and female babies.
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