If adult male heights are normally distributed with a mean of 185 cm and a standard deviation of 6 cm, how high, in cm, should an aircraft lavatory door be to ensure that 99 percent of adult males will not have to stoop as they enter? 195 199 200 204
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If adult male heights are
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- For the study purpose, the mean of the observations is 148 gm and standard deviation is 17.4 gm. Approximately, the coefficient of variation equals to: А. 11 С. 12 В. 14 D. 13If some data is symmetrical and unimodal, and the mean and standard deviation are 230 and 40 respectively: a)How much of the data lies between 190 and 270 b)How much lies between 150 and 230 c)How much lies between 190 and 310the driving distances (miles) to wor of 30 people are shown below. assume the population standard deviation is 8 miles. Find: 12, 9, 7, 3, 27, 21, 2, 30, 7, 4, 1, 10, 2, 9, 2, 28, 7, 10, 13, 6, 13, 7, 3, 13, 6, 6, 3, 13 ,12, 16, 18 a) the point estimate of the population mean b) the margin of error for a 95% confidence interval c) contruct a 95% confidence interval for the population mean.
- The mean height of 790 students in a school is 151 cm and the standard deviation is 15 cm. Assume that the heights are normally distributed. How many students have heights between 119.5 cm and 155.5 cm? Select one: a. 474 students b. 381 students c. 316 students d. 93 students e. 395 studentsThe average height of 1,000 children is 150cm with a standard deviation of 10cm. How many children stand between 155cm and 150cm ? A. Find the raw score for z= -1,-2,-3,+1,+2,+3 B. Sketch the graph C. What z score corresponds to 50? D. What z score corresponds to 60? E. Find the total area . F. Multiply the total area by 1000. G. Make a conclusion.Solve step by step in digital format Suppose that the average income of the engineers hired at REDUNO presents an approximately normal behavior with a mean of $17,000 pesos and a standard deviation of $3,000 pesos. a) What percentage of the employees will have incomes greater than $20,000 pesos?b) In a random sample of 50 employees, about how many people can be expected to have incomes of less than $15,000 pesos?
- The height of personnel of a security service are normally distributed with a mean of 161cm and a standard deviation of 8cm. I) what proportion of the security service have heights between 152cm and 176 cm.Ii) if 25% of the personnel are more than h cm tall, find the value of h.1) The speed of 100 cars was measured on a road with a speed limit of 90 km/h. The data was found to be approximately normal with a mean of 88 km/ h and standard deviation of 1.0km/h. a) How many cars were driving at a speed between 87km/h and 89km/h? b) How many vehicles were fined between 90km/h and 91km/h for exceeding the speed limit?Suppose the distribution of heights of a group of 300 children is normal, with a mean of 150 centimeters and a standard deviation of 12 centimeters. About how many of these children are taller than 162 centimeters? children