Homework Answers
Solution:
Given that,
n1 = 10
n2 = 8
Degrees of freedom is,
df = n1 + n2 - 2
= 10 + 8 -2
= 16
Option D is correct.
Add Answer to:
answer please can simplify process
You wish to compute a confidence interval for H1-H2 for two...
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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...
please help with finding the test statistic, p value and confidence interval. please show work Male...
please help with finding the test statistic, p value and confidence
interval. please show work
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A nutritionist found that a random sample of sandwiches from two restaurants, labeled A and B,...
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H0:
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Calculate the t statistic.
Calculate the P-value
Construct a confidence interval.
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answer please can simplify process
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Suppose we had the following summary statistics from two different, independent populations, both with variances equal...
Suppose we had the following summary statistics from two
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σ.
Population 1: ¯x1= 126, s1= 8.062, n1= 5
Population 2: ¯x2= 162.75, s2 = 3.5, n2 = 4
We want to find a 99% confidence interval for μ2−μ1. To do this,
answer the below questions.
Suppose we had the following summary statistics from two different, independent populations, both with variances equal to o: 1. Population 1: Ti = 126, $i = 8.062,...
Construct the indicated confidence interval for the difference between the two population means. Assume that the...
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...
Use the t-distribution table to find the critical value(s) for the indicated alternative hypotheses, level of...
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section 10.3
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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 (12) so that the standard error of the difference between means is obtained by pooling the sample variances. A researcher regularly and people who do not exercise regularly, Independent simple random samples were obtained of 16 people who do not exercise regularly and...
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...
please help with finding the test statistic, p value and confidence
interval. please show work
Male BMI Female BM HA P2 Given in the table are the BMI statistics for random samples of men and women. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b) below. Use a 0.01 significance level for both parts. 272991 8.358284 24.7416 4.878176...
A nutritionist found that a random sample of sandwiches from two restaurants, labeled A and B, had the sample statistics shown in the table to the bottom right. Construct a 95% confidence interval for o/o using the definition to the right, where o and o are the variances of the cholesterol content of sandwiches from A and B, respectively. The 95% confidence interval is (OD). (Simplify your answer. Round to three decimal places as needed.) When s; and s are...
H0:
H1:
Calculate the t statistic.
Calculate the P-value
Construct a confidence interval.
Listed in the data table are IQ scores for a random sample of subjects with medium lead levels in their blood. Also listed are statistics from a study done of IQ scores for a random sample of subjects with high lead levels. 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....
answer please can simplify process
Two experimental diets, designed to add weight to malnourished adults in developing countries, are being tested. The following sample data for weight gain after 6-weeks on the diet (in kg) was obtained (assume normally distributed data): n = 8, mean = 5.80, S1 = 1.613 for Diet A and n2 = 9, mean = 7.27, S2 = 0.99 for Diet B. Suppose you decided to use the non-pooled t-test and present your results in a...
Suppose we had the following summary statistics from two
different, independent populations, both with variances equal to
σ.
Population 1: ¯x1= 126, s1= 8.062, n1= 5
Population 2: ¯x2= 162.75, s2 = 3.5, n2 = 4
We want to find a 99% confidence interval for μ2−μ1. To do this,
answer the below questions.
Suppose we had the following summary statistics from two different, independent populations, both with variances equal to o: 1. Population 1: Ti = 126, $i = 8.062,...
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...
Use the t-distribution table to find the critical value(s) for the indicated alternative hypotheses, level of significance a, and sample sizes n1 and n2. Assume that the samples are independent, normal, and random Answer parts (a) and (b) Ha H1H2, 0.005, n1 12, n2 10 (a) Find the critical value(s) assuming that the population variances are equal. Construct a 90% confidence interval for -H2 with the Bakery A Bakery B sample statistics for mean calorie content of two bakeries specialty...
section 10.3
Provided below are summary statistics for independent simple random samples from two populations. Use the nonpooled t-test and the nonpooled t-interval procedure to conduct the required hypothesis test and obtain the specified confidence interval. *4 = 10,5 - 2, 0, -20, 72 - 11,5 - 5, n2 - 20 a. Two-tailed test, a = 0.01 b. 99% confidence interval a. What are the hypotheses for the t-test? O A HOHH2 H₂H12 Oc. Ho: H = 12 Hai H1...
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