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Q1. If n = 10 and p = 0.70, then calculate the mean, standard deviation and variance of the binomial distribution.
Q2. Suppose that the probability of parents having a child with blond hair is 1/4. If there are 6 children in the family, find the probability that half of them will have blond hair.
Q3. A quality inspector picks a sample of 10 tubes at random from a very large shipment of tubes known to contain 20% defective tubes. Find the probability that only 2 of the tubes picked are defective.
Q4. A service facility has an average arrival of five customers per hour. Calculate the probability that exactly two customers will arrive at the service facility per hour.
A university has found that 20% of its students withdraw without completing the introductory statistics course. Assume that 20 students have registered for the course this semester.
Can the value 0.64 be rejected if a survey of 495 homes in Omaha yields 332 with one or more lawn mowers? Use = 0.05.
The sample yielded a mean content of 11.88 ounces, with a standard deviation of 0.24 ounces. Use a 0.05 level of significance and test to see if the machine is in perfect adjustment (perform all six steps of hypothesis testing, including p-values)..
Which binomial probabilities can be approximated by the normal probability distribution? Explain. c) what is the probability of between 100 and 110 successes? d) What is the probability of 130 or more successes?
A retail store manager is trying to estimate the average purchase transaction amount for a particular store. She takes a sample of 35 transactions and determines the mean purchase transaction amount from this same is $85 with a standard deviation ..
1.which slope is more significant when i am predicting the selling price of homes based on the size of the home?a. 64
Compute the range and interquartile range
Thompson Machine Works purchased several new, highly sophisticated machines. The production department needed some guidance with respect to qualifications needed by an operator. Four variables were listed.
this assignment requires an amount of computer work and written comment. you may need to seek guidance from your tutor
part-1reinforce understanding of power beta and alpha.problem a packing process is designed to fill steel drums with
Over the last ten years, the average GPA has been 3.0. Is this year's class significantly different from the long-run average? At what alpha level would it be significant?
If you want to be 95% confidence of estmating the population mean to within a sampling error of +-4 and the standard deviation is assumed to be 10, what sample size is required?
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