The length of life, in hours, of a drill bit in a mechanical operation has a Weibull distribution with a = 3 and ẞ=60. Find the probability that the bit will fail before 12 hours of usage. The probability is (Round to four decimal places as needed.)
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- pls answer B, C, F onlyAssume that the probability of a being born with Genetic Condition B is p=110. A study looks at a random sample of 1037 volunteers.Find the most likely number of the 1037 volunteers to have Genetic Condition B.(Round answer to one decimal place.)μ=Let X represent the number of volunteers (out of 1037) who have Genetic Condition B. Find the standard deviation for the probability distribution of X.(Round answer to two decimal places.)σ=Use the range rule of thumb to find the minimum usual value μ−2⋅σ and the maximum usual value μ+2⋅σ Enter answer as an interval using square-brackets only with whole numbers. Make sure the end points are usual values that are actually within the range of usual values.usual values =Find the indicated probability and interpret the result. From 1975 through 2020, the mean annual gain of the Dow Jones Industrial Average was 651. A random sample of 31 years is selected from this population. What is the probability that the mean gain for the sample was between 500 and 800? Assume σ=1540.
- Assume that thermometer readings are normally distributed with a mean of 0°C and a standard deviation of 1.00°C. A thermometer is randomly selected and tested. For the case below, draw a sketch, and find the probability of the reading. Between 1.50 and 2.25In a family with 10 children the p probability of a boy =0.5. Find the exact probability of less than 2 boys. And find the normal approximate probability of less than 2 boys. O A. Exact = 0.550, Approx = 0.570 %3D B. Exact = 0.005, Approx = 0.007 OC. Exact = 0.055, Approx = 0.057 %3D OD. Exact = 0.055, Approx = 1.0 %3DUse the data in the following table, which lists drive-thru order accuracy at popular fast food chains. Assume that orders are randomly selected from those included in the table. Drive-thru Restaurant D A В D Order Accurate 318 260 235 121 Order Not Accurate 39 57 33 14 If one order is selected, find the probability of getting food that is not from Restaurant A. The probability of getting food that is not from Restaurant A is. (Round to three decimal places as needed.)
- Draw the graph for the following probability: Between 1.4 and 2.6 Shade: Right of a value Click and drag the arrows to adjust the values.Find the indicated probability and interpret the result. From 1975 through 2020, the mean annual gain of the Dow Jones Industrial Average was 653. A random sample of 33 years is selected from this population. What is the probability that the mean gain for the sample was between 400 and 800? Assume σ = 1540. The probability is ☐ (Round to four decimal places as needed.)Based on a poll, among adults who regret getting tattoos, 13% say that they were too young when they got their tattoos. Assume that six adults who regret getting tattoos are randomly selected, and find the indicated probability. Complete parts (a) through (d) below. a. Find the probability that none of the selected adults say that they were too young to get tattoos. 0.4336 (Round to four decimal places as needed.) b. Find the probability that exactly one of the selected adults says that he or she was too young to get tattoos. 0.3888 (Round to four decimal places as needed.) c. Find the probability that the number of selected adults saying they were too young is 0 or 1. (Round to four decimal places as needed.)
- Use the data in the following table, which lists drive-thru order accuracy at popular fast food chains.. Assume that orders are randomly selected from those included in the table. Drive-thru Restaurant o A D Order Accurate Order Not Accurate 327 266 55 233 35 121 34 18 If one order is selected, find the probability of getting an order that is not accurate. The probability of getting an order that is not accurate is (Round to three decimal places as needed.)In a waiting line situation, arrivals occur at a rate of 2 per minute, and the service times average 18 seconds. *Please show formulas in EXCEL format a. What is λ? 2 per min b. What is μ? 18 seconds c. Find probability of no units in the system. d. Find average number of units in the system. e. Find average time in the waiting line. f. Find average time in the system. g. Find probability that there is one person waiting. h. Find probability an arrival will have to wait.Use the data in the following table, which lists drive-thru order accuracy at popular fast food chains. Assume that orders are randomly selected from those included in the table. Drive-thru Restaurant D A Order Accurate Order Not Accurate 318 34 272 52 244 30 150 18 If one order is selected, find the probability of getting an order that is not accurate. The probability of getting an order that is not accurate is (Round to three decimal places as needed.)
