Mathematics, 21.12.2019 06:31 CrunchyBreadstick
Construct the indicated confidence interval for the difference between the two population means. assume that the two samples are independent simple random samples selected from normally distributed populations. also assume that the population standard deviations are equal (σ1= 2 ), so that the standard error of the difference between means is obtained by pooling the sample variances. a paint manufacturer wanted to compare the drying times of two different types of paint. independent simple random samples of 11 cans of type a and 9 cans of type b were selected and applied to similar surfaces. the drying times, in hours, were recorded. the summary statistics are as follows. type a: x1= 71.5hr, s1=3.4 hr n1=11type b: x2=68.5 hr, s2= 3.6 hr, n2= 9construct a 99% confidence interval for μ1-μ2 , the difference between the mean drying time for paint type a and the mean drying time for paint type b.
Answers: 2
Mathematics, 21.06.2019 22:00
Acaterer charges $500 plus $30 per guest to cater a wedding. walt and traci don't want to spend more than $8000 on catering. write and solve an inequality in terms of the number of guests, g, that can be invited. a) 30g ? 8000; g ? 267 b) 500g < 8000; g < 16 c) 500 + 30g < 8000; g < 250 d) 500 + 30g ? 8000; g ? 250
Answers: 1
Mathematics, 21.06.2019 22:20
Which of the following equations are equivalent to -2m - 5m - 8 = 3 + (-7) + m? -15m = -4m -7m - 8 = m - 4 -3m - 8 = 4 - m m - 4 = -7m - 8 -8 - 7m = -4 + m -8 - 3m = 4 - m
Answers: 1
Mathematics, 21.06.2019 23:30
What are the coordinates of the image of p for a dilation with center (0, 0) and scale factor 2
Answers: 1
Mathematics, 22.06.2019 01:30
Drag the tiles to the correct boxes to complete the pairs. match the exponential functions with their horizontal asymptotes and y-intercepts. f(x) = 7x − 4 f(x) = 3x+2 + 4 f(x) = 9x+1 − 4 f(x) = 2x + 4 horizontal asymptote and y-intercept exponential function horizontal asymptote: y = 4 y-intercept: (0, 5) arrowboth horizontal asymptote: y = -4 y-intercept: (0, 5) arrowboth horizontal asymptote: y = -4 y-intercept: (0, -3) arrowboth horizontal asymptote: y = 4 y-intercept: (0, 13) arrowboth
Answers: 1
Construct the indicated confidence interval for the difference between the two population means. ass...
Spanish, 04.04.2020 22:47
History, 04.04.2020 22:47
Social Studies, 04.04.2020 22:47
Chemistry, 04.04.2020 22:47
Mathematics, 04.04.2020 22:47
Mathematics, 04.04.2020 22:47
Mathematics, 04.04.2020 22:47
Mathematics, 04.04.2020 22:47
English, 04.04.2020 22:47
History, 04.04.2020 22:47
Mathematics, 04.04.2020 22:47