[A] From 21, 27, 46, 35, 41, 36, 25 Find (1) Median, (2) Mean, (3) Standard...
A random sample of 36 rainbow trout caught at Brainard Lake in Colorado has a mean length of 11.9 inches with a standard deviation of 2.8 inches. Assuming that the lengths of rainbow trout in this lake are normally distributed, find a 98% confidence interval for the population mean length of all rainbow trout in this lake. Round answers to the nearest hundredth.
please lease solve all questions. 2. Consider the following two variables X and Y: 4 a. (2 pts) Find the mean of X, and mean of Y b. (2 pts) Find the standard deviation of X, and standard deviation of Y C. (3 pts) Find the covariance between X and Y d. (2 pts) Find correlation coefficient between X and Y and comment on your answer. 3. The following table shows a random sample of 100 hikers and the areas...
The length of time it takes college students to find a parking spot in the library parking lot follows anormal distribution with a mean of 5.5 minutes and a standard deviation of 1 minute. Find theprobability that a randomly selected college student will take between 4.0 and 6.5 minutes to find aparking spot in the library lot.
The length of time it takes college students to find a parking spot in the library parking lot follows a normal distribution with a mean of 4.0 minutes and a standard deviation of 1 minute. Find the probability that a randomly selected college student will take between 2.5 and 5.0 minutes to find a parking spot in the library lot.
The length of time it takes college students to find a parking spot in the library parking lot follows a normal distribution with a mean of 7 minutes and a standard deviation of 1 minute. Find the probability that a randomly selected college student will find a parking spot in the library parlong lot in less than 6.5 minutes.0.2674 0.3551 0.1915 0.3085
2.) Suppose the time X between calls to a phone center has a mean of 25 minutes and a standard deviation of 16 minutes. A simple random sample of 36 times between calls is taken. Find the probability that their average time is less than 20 minutes.
1. u imately 74% of his (10 pts) During tetwe, James' career, he successfully makes "e fhee throw attempts. If Letron James attempts & free throws per game, what is the probability that he will successfully make at least 6 free throws 5. (o pts) The Statistical Bulletin published by Metropolitan Life Insurance Co. reported that births is taken. find 2% of all-A merican births result in twins. If a random sample of 8000 the mecan variance, and standard deviation...
Question 1 of 21 The weights of all babies born at a hospital have a mean of 7.4 pounds and a standard deviation of 0.66 pounds. Assuming (n/N less than 0.05), the standard deviation of the sampling distribution of the mean weight of a sample of 32 babies born at this hospital, rounded to three decimal places, is: A. 0.102 B. 0.117 C. 0.129 D. 0.198 Question 2 of 21 A continuous random variable x has...
Problem #3 Size (inches) 9 20 27 31 35 40 60 Sale Price ($) 147 197 297 447 1177 2177 2497 Use the data above (size and price of TV sets) Make a scatter plot of the data. Does it appear from inspection that there is a relationship between the variables? Why or why not? Calculate the least squares line. Put the equation in the form of: y= a + bx Find the correlation coefficient. Is it significant? Find...
5.4.1 Question Help A population has a mean = 141 and a standard deviation o = 28. Find the mean and standard deviation of the sampling distribution of sample means with sample size n = 40. The mean is :-), and the standard deviation is 0;=0 (Round to three decimal places as needed.) 5.4.2 Question Help A population has a meanu - 74 and a standard deviation = 8. Find the mean and standard deviation of a sampling distribution of...