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A survey found that women height are normally distributed with a mean 63.8 in and standard deviation of 2.8in. The survey also found that mens heights are normally distributed with a mean of 68.1in and standard devation of 2.9 complete the parts
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Most of the live characters at an amusement park have req. height with a minimum of 4 ft and a max of 6ft 4in. find the percentage of women meet req is——————
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Find the % of men who meet req.
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If the height req. are changed to exclude only the tallest 5% of men and the shortest 5% of women, what are the new heights req.? the new height req. are at least———– in and at the most ————inches.
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Three randomly selected Households are surveyed. The number of people in the households are 1,3, and 8. Assume the sample of the size n=2 are randomly selected with replacement from the population of 1,3, and 8. Listed below are the nine different samples 1,1 1,3 1,8 3,1 3,3 3,8 8,1 8,3 8,8
S^2 Probability
____ _________
______ __________
_________ __________
__________ ____________(fractions)
b. compare the population varance to the mean of the sample variances
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A genetics experiment involves a population of fruit flies consisting of 2 males named billy and christen and 2 females named dana and Emily. Assume that 2 fruit flies are randomly selected with replacement.
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After listing the possible samples and finding the proportion of the females in each sample, use a table to describe the sampling distribution of the proportion of females.
Proportion of females| Probability
0 ______
0.5 ______
1 _______
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Find the mean of the sampling distribution µ =
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Is the mean of the sampling distribution from part b equal to the population of females? If so, does the mean of the sampling distribution of proportions always equal the population proportion?—————
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Assume that a women heights are normally distributed with a mean given by µ= 63.4in, and a
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Standard deviation given by σ= 1.7in
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If 1 women is randomly selected, find the probability that her height is less than 64in. The probability is approximately ____________
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If 30 women are randomly selected find the probability that they have a mean height less than 64in The probability is appoximatley______________
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A certain brand of candies have a mean weight of 0.8588g and standard deviation of 0.0523. A sample of these candies came from a package containing 452 candies, the mean weight of candies must exceed 386.1452 0.8542g for the net contents to weight at least 386.1g
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If 1 candy is randomly selected, find the probability that it weighs more than 0.8542g. ____
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If 452 candies are randomly selected, find the probability that their mean weight is at least at 0.8542g. The probability that a sample of 452 candies will have a mean weight of 0.8542g or greater is ___________
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Given these results does it seem that the candy company is providing consumers with the amount claimed on the label? Answer: Y/N bc the probability of getting a sample mean of 0.8542g or greater when 452 candies are selected is/is not exceptionally small.
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The values given below is discrete. Use the continuity correction and describe the region of the normal distribution that corresponds to the indicated probability. Probability of exactly 4 passengers who do not show up for flights.
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The area to the right of 3.5
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The area between 3.5 and 4.5
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The area to the left of 4.5
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The area to the left of 3.5
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The area to the right of 4.5
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Use a normal approximation to find the probability of the indicated number of voters. In this case assume that 199 eligible voters aged 18-24 are randomly selected. Suppose a previous study showed that among eligible votes aged 18-24, 22% of them voted.
Probability that fewer than 48 of 199 eligible voters voted is _____________________.
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