Mathematics, 01.09.2020 19:01 PoPFli21
A group of scientists are doing a study of elephants in Africa. They take a random sample of 200 elephants, and reveal the data set below. They believe the population of elephants in the area is about 6 times the size of the random sample. What is the estimated total population of male elephants with tusks?
Answers: 2
Mathematics, 21.06.2019 18:40
Complete the steps, which describe how to find the area of the shaded portion of the circle. find the area of the sector by multiplying the area of the circle by the ratio of the to 360. subtract the area of the triangle from the area of the sector.
Answers: 3
Mathematics, 22.06.2019 01:50
According to a study done by de anza students, the height for asian adult males is normally distributed with an average of 66 inches and a standard deviation of 2.5 inches. suppose one asian adult male is randomly chosen. let x = height of the individual. a) give the distribution of x. x ~ b) find the probability that the person is between 64 and 69 inches. write the probability statement. what is the probability?
Answers: 2
Mathematics, 22.06.2019 03:50
Arandom sample of n = 25 observations is taken from a n(µ, σ ) population. a 95% confidence interval for µ was calculated to be (42.16, 57.84). the researcher feels that this interval is too wide. you want to reduce the interval to a width at most 12 units. a) for a confidence level of 95%, calculate the smallest sample size needed. b) for a sample size fixed at n = 25, calculate the largest confidence level 100(1 − α)% needed.
Answers: 3
A group of scientists are doing a study of elephants in Africa. They take a random sample of 200 ele...
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