A shipment of grapefruit arrived containing the following proportions of types: 10 pink seedless, 20 white seedless, 30 pink with seeds, 40 white with seeds. A grapefruit is selected random from the shipment. Find the probability that it is seedless.
Q. 2The total area under the curve of the standard normal distribution is not necessarily 1.0.
Indicate whether the statement is true or false
Q. 3Sixty percent of the applicants at a high tech firm have a college degree, 45 have at least three years experience in the high tech industry, and 35 have both a college degree and three years experience in the high tech industry. An applicant is randomly chosen. Find the probability that the applicant has at least three years experience in the high tech industry and no college degree.
Q. 4If the random variable z is the standard normal score, then the standard deviation of the distribution of z is 1.
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Q. 5Sixty percent of the applicants at a high tech firm have a college degree, 45 have at least three years experience in the high tech industry, and 35 have both a college degree and three years experience in the high tech industry. An applicant is randomly chosen. Find the probability that the applicant has less than three years experience in the high tech industry.
Q. 6If the random variable z is the standard normal score, then the mean of the distribution of z is 0.
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Q. 7Sixty percent of the applicants at a high tech firm have a college degree, 45 have at least three years experience in the high tech industry, and 35 have both a college degree and three years experience in the high tech industry. An applicant is randomly chosen. Find the probability that the applicant has no college degree.
Q. 8Without the use of the standard normal tables, techniques of calculus must be used to find probabilities concerning a normal distribution.
Indicate whether the statement is true or false
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