What is the variance of the profit?
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A contractor is considering a sale that promises a profit of ₱92 000 with a
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- A project's profit (in thousands), is a random variable with normal distribution. The variance equal to the cube of the mean. The probability of the project loss (negative profit) is 3.01%. The expectation of the profit is: Select one: а. 282.9 b. 410.9 c. 371.8 d. 326.5 e. 456.5Twelve percent of the world's population is left-handed. A researcher claims that left-handed individuals are more creative than those who aren't left- handed. In order to support his claim, he takes a sample of 1650 artists and finds that 14% of them are left-handed. Answer the following. (If necessary, consult a list of formulas.) (a) Find the mean of p, where p is the proportion of left-handed individuals in a random sample of 1650. (b) Find the standard deviation of p. (c) Compute an approximation for P(p<0.14), which is the probability that there will be 14% or fewer left-handed people in a random sample of 1650. Round your answer to four decimal places.A young investment manager tells his client that the probability of making a positive return with his suggested portfolio is 84%. If it is known that returns are normally distributed with a mean of 4.1%, what is the risk, measured by standard deviation, that this investment manager assumes in his calculation?
- Solve for the variance of the weight of all the beans in a box. Also explain where did you get the formula for varianceA manager believes that the variance of output on the second shift is greater than the variance on the day shift. The following data are collected: 50 samples on the day shift; variance = 500 40 samples on the second shift; variance = 900 Set up hypotheses Perform a test and state your conclusions.Fourty six percent of the students in a class of 120 are planning to go to graduate school, Find the variance of this binomial distribution
- Suppose the variance of X is 14. What is the variance of .47X?We are interested in determining whether or not the variances of the sales at two music stores (A and B) are equal. A sample of 16 days of sales at store A has a sample variance of 20 while a sample of 26 days of sales from store B has a sample variance of 30. The test statistic is (A) 1.50 (B) 1.69 (C) 2.25 (D) 2.50Part 1. .If b = 0.523, then for every 1 unit increase in the independent variable, there is a 0.523 unit increase in the dependent variable. True or false? 2. .If b = .704, then 70.4% of the variance in the dependent variable can be explained by the variance in the independent variable. In contrast, 29.6% of the variance in the dependent variable can be explained by outside factors. True or false? 3. .If r = 0.444, then for every 1 unit increase in the independent variable, there is a 0.444 unit increase in the dependent variable. True or false?
- Twelve percent of the world's population is left-handed. A researcher claims that left-handed individuals are more creative than those who aren't left-handed. In order to support his claim, he takes a sample of 1650 artists and finds that 14% of.them are left-handed. Español Answer the following. (If necessary, consult a list of formulas.) (a) Find the mean of p, where p is the proportion of left-handed individuals in a random sample of 1650. 00 (b) Find the standard deviation of p. (c) Compute an approximation for P (p s0.14), which is the probability that there will be 14% or fewer left-handed people in a random sample of 1650. Round your answer to four decimal places. Save For Later Submit Assignment Check Terms of Use Privacy Center Accessibility acer esc backspaA project’s profit (in thousands), is a random variable with normal distribution. The variance equal to the cube of the mean. The probability of the project loss (negative profit) is 6.94%. The expectation of the profit is:A study estimated that the percentage of women living in refugee camps in the West Bank who have less than a high school education to be 19%. If a :random sample of 15 people is drawn from this population, the variance of the variable is 2.3085 .a C 2.85 .b O 1.519 .c O 0.5 .d O
