A paint manufacturer which is to compare the drying times of two types of paint. Independent samples random samples of 11 cans of Type A and nine cans of Type B selected and applied similar services. The drying times, and hours, recorded. The summary statistics are as follows:
Type A. Type B
x_{1}=77.5 hours. x_{2}=63.6 hours
s_{1}=4.5 hours. s_{2}=5.1 hours
n_{1}=11. n_{2}=9.
Construct a 98% confidence interval the difference in mean drying times for type a and type B
a.) 8.42hrs < μ1-μ2 < 19.38hrs
b.) 8.28 < μ1-μ2 < 19.52
c.) 8.35 < μ1-μ2 < 19.45
d.) 8.58 < μ1-μ2 < 19.22
A paint manufacturer which is to compare the drying times of two types of paint. Independent...
what is the correct answer? A paint manufacturer made a modification to a paint to speed up its drying time. Independent simple random samples of 11 cans of type A (the original paint) and 9 cans of type B (the modified paint) were selected and applied to similar surfaces. The drying times, in hours, were recorded. The summary statistics are as follows. Type A x1-76.3 hrx265.1hr 1-4.5 hr2 5.1 hr n1-11 The following 98% confidence interval was obtained for μ1-μ2...
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. Do not assume that the population standard deviations are equal. A paint manufacturer wished 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...
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 (0, 0), 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...
Solve question 4.... 4) (10 Marks) Two independent experiments are being run in which two different types of paints are compared. Eighteen specimens are painted using type A and the drying time, in hours, is recorded on each. The same is done with type B. a) Suppose that the population standard deviations are both known to be 1.0. Assuming that the mear drying time is equal for the two types of paint, find P(RA-XB>1.0), where XA and XB are average...
Timed Test Thistest has a time of 2 hours and 30 minutes. This test will save and submit automatically when the time expres. Warnings appear when half the time 5 minutes 1 minute and seconds reman Multiple Anemos Not allowed. This can only be taken once Force Completion Once started this test must be completed in one Do not be the before Save and Suit Your answers are saved automatically Remaining Time: 2 hours, 25 minutes 52 seconds Question Completion...
18) Last year the proportion of employees in a city commuting to work was 8%. A commuter van company claims that the proportion of people commuting to work is higher than 8% (0.08) now. 1000 employees are surveyed and 105 of them commute to work. At a significance level of 0.05 can we support the commuter van company's claim? Perform an appropriate hypothesis test. B) FTR H, NEETS C) Reject H, IEETR E) None of the Above B) FTR H,...