In a sample of 15 men, the mean height was 171 cm. In a sample of 30 women, the mean height was 158. What was the mean height for both groups put together? Round your answer to the nearest whole number
The mean height of both the groups combined is :
= ((15*171)+(30*158))/(15+30)
= 2565 + 4740 / 45
= 162.333333
to nearest number is 162 cms
In a sample of 15 men, the mean height was 171 cm. In a sample of...
Exam No.I (midterm) Question No. 19 . Select only one answer. /1 pts. In a sample of 30 men, the mean height In a sample of 20 women, the mean was 178 cm. height was 164 cm. What is the mean height if both groups where combined together? 169.9 cm (A) 171. cm (B) 172.1 cm (C) 172.4 cm (D) None of thc above (your answer: (E) Not enough information to answer the question (F)
The mean height of men is 69.7 inches. Assume that the heights of men are normally distributed, with a standard deviation of 2.9 in. a. [2 pts] 10% of men are taller than which height? Round your answer to 1 decimal place. b. [2 pts] Find the percentage of men that are 6'0" or taller. Round your final answer to 2 decimal places. c. [1 pts]How does the approximate percentage for the height of men 6'0" or taller (from the...
To estimate the mean height of men in a city, a randomly sample of 49 men is selected from the city and yields a mean height x=70 and a standard deviation s = 2.8". (a) Obtain an 85% confidence interval for the mean height of all men in the city. (b) Interpret your result in part (a).
Heights of men on a baseball team have a bell-shaped distribution with a mean of 171 cm and a standard deviation of 5 cm. Using the empirical rule, what is the approximate percentage of the men between the following values? a. 161 cm and 181 cm b. 166 cm and 176 cm
. Estimating the mean height of men in your city (a) Select a random sample of 25men from a city or use a public website to get a sample of men's heights. Record the men's heights in inches (b) Describe how the sample is obtained (c) Make a stemplot for the data (d) Find the mean and standard deviation of the 25men's heights inches e)finches (f) Give an85% confidence interval for the mean height of all men in the city...
Average height of men is normally distributed with mean height of 160 cm and standard deviation of 5 cm. If a man is randomly selected from this population, find the probability that he is between 150 cm and 162 cm. Question 12 options: 0.0228 0.3422 0.6554 0.6326 0.850
In a town the male monster males have a mean height of 244 cm and a standard deviation of 13.1 cm. What height represents the first quartile? Do not round the answer. State the answer only and no additional work. Do NOT include a label. If your answer is 27 feet, just put 27.
A physical therapist wants to determine the difference in the proportion of men and women who participate in regular sustained physical activity. What sample size should be obtained if he wishes the estimate to be within five percentage points with 99% confidence, assuming that (a) he uses the estimates of 21.1% male and 19.8% female from a previous year? (b) he does not use any prior estimates? (a) na (Round up to the nearest whole number.) (b) = n=(Round up...
QUESTION 16 A normally distributed population of adult American men heights has a mean of 57.8 inches and a standard deviation of 4.3 inches. Determine the sample average height at the 1st percentile for samples of size 75. Round to the nearest tenth QUESTION 17 A normally distributed population has a mean of 268 and a standard deviation of 39. Determine the value of the 90th percentile. Round to the nearest whole number QUESTION 18 A population is normally distributed...
Heights of men on a baseball team have a bell-shaped distribution with a mean of 179 cm and a standard deviation of 8 cm. Using the empirical rule, what is the approximate percentage of the men between the following values? a. 163 cm and 195 cm b. 171 cm and 187 cm a. 1% of the men are between 163 cm and 195 cm. (Round to one decimal place as needed.) b" | % of the men are between 171...