Mathematics, 24.03.2021 21:50 u8p4
A student researcher compares the heights of American students and non-American students from the student body of a certain college in order to
estimate the difference in their mean heights. A random sample of 12 American students had a mean height of 68.4 inches with a standard
deviation of 2.46 inches. A random sample of 17 non-American students had a mean height of 65.1 inches with a standard deviation of 2.96
inches. Determine the 98 % confidence interval for the true mean difference between the mean height of the American students and the mean
height of the non-American students. Assume that the population variances are equal and that the two populations are normally distributed.
Step 2 of 3: Find the margin of error to be used in constructing the confidence interval. Round your answer to six decimal places.
Answers: 1
Mathematics, 21.06.2019 16:20
Tomas is making trail mix using granola and walnuts. he can spend a total of $12 on the ingredients. he buys 3 pounds of granola that costs $2.00 per pound. the walnuts cost $6 per pound. he uses the equation to represent the total cost, where x represents the number of pounds of granola and y represents the number of pounds of walnuts. he solves the equation for y, the number of pounds of walnuts he can buy. answer- b tomas added 6 to both sides of the equation instead of subtracting 6. just took the test
Answers: 1
Mathematics, 21.06.2019 22:50
Which of the following is closest to 32.9 x 7.5? a: 232 b: 259 c: 220 d: 265
Answers: 2
Mathematics, 21.06.2019 23:50
Write the standard form of an equation with (see picture below)
Answers: 2
A student researcher compares the heights of American students and non-American students from the st...
Biology, 10.11.2019 23:31
Mathematics, 10.11.2019 23:31
Mathematics, 10.11.2019 23:31
Mathematics, 10.11.2019 23:31
Mathematics, 10.11.2019 23:31
Biology, 10.11.2019 23:31
History, 10.11.2019 23:31
Mathematics, 10.11.2019 23:31
Mathematics, 10.11.2019 23:31