Homework Answers
![Page -1] Given : Mo=0:45 ml 6- joi = 0.1 Sample 0.65 ml 0.75 me <=0.05 o sample mean=F= 0.65 +0.75 = leo TE=0.5 © sample size](http://img.homeworklib.com/questions/762411f0-ef37-11eb-b300-2383c17e0c00.png?x-oss-process=image/resize,w_560)
![page-2] ☺ value of the test statistic 2= w o ~ N(0.1) on 2 = 0.7- 0:45 01/2 2- Dias 2=5] © P-value = 0.00001 I less than 0.00](http://img.homeworklib.com/questions/76ad7670-ef37-11eb-8e8a-4b02085e7988.png?x-oss-process=image/resize,w_560)
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Assume that the average volume of raindrops globally is normally distributed with mean 0.45 ml and...
Assume that the average volume of raindrops globally is normally distributed with mean 0.45 ml and...
Assume that the average volume of raindrops globally is normally distributed with mean 0.45 ml and variance 0.01 ml2. Michael measures the volume of two raindrop at Rainyville as 0.65 ml and 0.75 ml; and comes to believe that the raindrops at Rainyville are significantly larger than the global average at the 5% level. Match each of the following with its value. 1. Value of the Test Statistic 2. p value 3. Sample Mean 4. Sample Standard Deviation 5. Sample...
A business school placement director wants to estimate the mean annual salaries 5 years after students...
A business school placement director wants to estimate the mean annual salaries 5 years after students graduate. A random sample of such graduates found a sample mean of $427,400. A confidence interval for the population mean annual salaries 5 years after students graduate is then estimated to be from $419,020 to $435,780. If the placement director considers that this confidence interval is too wide and would like to have an interval of half width only, what should he do? Select...
QUESTION 1 Salary information regarding two independent random samples of male and female employees of a...
QUESTION 1 Salary information regarding two independent random samples of male and female employees of a large company is shown below. Male Female 36 41 72 Sample size 64 Sample mean salary (in44 S1000s) Population variance 128 The point estimate of the difference between the means of the two populations (Male - Female) is -28 4 -4 Refer to Question 1. The standard error for the difference between the two means is_ 4 7.46 4.24 2.0 Refer to Question 1...
Problem 1: A physician claims that joggers' maximal volume oxygen uptake is greater than the average...
Problem 1: A physician claims that joggers' maximal volume oxygen uptake is greater than the average of all adults. A sample of 15 joggers had a mean oxygen uptake of 40.6 millimeters per kilogram (ml/kg) and a standard deviation of 6 ml/kg. If the mean oxygen uptake for all adults is 36.7 ml/kg, is there enough evidence to support the physician's claim at a 10% significance level? Assumption: parameter: null hypothesis Ho: alternative hypothesis Hj: test statistic: rejection region: calculated...
(1 point) The nicotine content in cigarettes of a certain brand is normally distributed with mean...
(1 point) The nicotine content in cigarettes of a certain brand is normally distributed with mean (in milligrams) u and standard deviation o= 0.1. The brand advertises that the mean nicotine content of their cigarettes is 1.5 mg. Now, suppose a reporter wants to test whether the mean nicotine content is actually higher than advertised. He takes measurements from a SRS of 20 cigarettes of this brand. The sample yields an average of 1.55 mg of nicotine. Conduct a test...
(1 point) The nicotine content in cigarettes of a certain brand is normally distributed with mean...
(1 point) The nicotine content in cigarettes of a certain brand is normally distributed with mean (in milligrams) u and standard deviation o= 0.1. The brand advertises that the mean nicotine content of their cigarettes is 1.5 mg. Now, suppose a reporter wants to test whether the mean nicotine content is actually higher than advertised. He takes measurements from a SRS of 20 cigarettes of this brand. The sample yields an average of 1.4 mg of nicotine. Conduct a test...
answer the exibit with an explanation please Exhibit 16-1 Salary information regarding male and female employees...
answer the exibit with an explanation please
Exhibit 16-1 Salary information regarding male and female employees of a large company is shown below. Mals Female Sample Sure 36 Sample Mean Salary (in $1,000) Population Variance (0) 128 3. Refer to Exhibit 10-1. The point estimate of the difference between the means of the two populations is b. 3 C4 d 4 ANS: B 4. Refer to Exhibit 10-1. The standard error for the difference between the two means is b....
Part A. Score on 25 point test is normally distributed with mean 22 and standard deviation...
Part A. Score on 25 point test is normally distributed with mean 22 and standard deviation 5. You took a sample of 9 students. The mean for this group is 19.111111 Test the hypothesis that the performance of this group is different than the regular group. Use α=.05. What is the alternative hypothesis? What is the rejection region? Calculated z What is your decision? Yes or no? You believe that the group from an honors and would perform better than...
The manager of a grocery store has taken a random sample of 100 customers. The average...
The manager of a grocery store has taken a random sample of 100 customers. The average length of time it took the customers in the sample to check out was 3.1 minutes. The population standard deviation is known at 0.5 minutes. We want to test to determine whether or not the mean waiting time of all customers is significantly different than 3 minutes. Use α = 0.05. 14. The test statistic is a. 1.96 b. 1.64 c. 2.00 d. 0.056...
Assume that a simple random sample has been selected from a normally distributed population and t...
Assume that a simple random sample has been selected from a normally distributed population and test the given claim. Identify the null ad alternative hypotheses, test statistic, P-value, and state the final conclusion that addresses the original claim In a manual on how to have a number one song, it is stated that a song must be no longer than 210 seconds. A simple random sample of 40 current hit songs results in a mean length of 227.2 sec and...
A business school placement director wants to estimate the mean annual salaries 5 years after students graduate. A random sample of such graduates found a sample mean of $427,400. A confidence interval for the population mean annual salaries 5 years after students graduate is then estimated to be from $419,020 to $435,780. If the placement director considers that this confidence interval is too wide and would like to have an interval of half width only, what should he do? Select...
QUESTION 1 Salary information regarding two independent random samples of male and female employees of a large company is shown below. Male Female 36 41 72 Sample size 64 Sample mean salary (in44 S1000s) Population variance 128 The point estimate of the difference between the means of the two populations (Male - Female) is -28 4 -4 Refer to Question 1. The standard error for the difference between the two means is_ 4 7.46 4.24 2.0 Refer to Question 1...
Problem 1: A physician claims that joggers' maximal volume oxygen uptake is greater than the average of all adults. A sample of 15 joggers had a mean oxygen uptake of 40.6 millimeters per kilogram (ml/kg) and a standard deviation of 6 ml/kg. If the mean oxygen uptake for all adults is 36.7 ml/kg, is there enough evidence to support the physician's claim at a 10% significance level? Assumption: parameter: null hypothesis Ho: alternative hypothesis Hj: test statistic: rejection region: calculated...
(1 point) The nicotine content in cigarettes of a certain brand is normally distributed with mean (in milligrams) u and standard deviation o= 0.1. The brand advertises that the mean nicotine content of their cigarettes is 1.5 mg. Now, suppose a reporter wants to test whether the mean nicotine content is actually higher than advertised. He takes measurements from a SRS of 20 cigarettes of this brand. The sample yields an average of 1.55 mg of nicotine. Conduct a test...
(1 point) The nicotine content in cigarettes of a certain brand is normally distributed with mean (in milligrams) u and standard deviation o= 0.1. The brand advertises that the mean nicotine content of their cigarettes is 1.5 mg. Now, suppose a reporter wants to test whether the mean nicotine content is actually higher than advertised. He takes measurements from a SRS of 20 cigarettes of this brand. The sample yields an average of 1.4 mg of nicotine. Conduct a test...
answer the exibit with an explanation please
Exhibit 16-1 Salary information regarding male and female employees of a large company is shown below. Mals Female Sample Sure 36 Sample Mean Salary (in $1,000) Population Variance (0) 128 3. Refer to Exhibit 10-1. The point estimate of the difference between the means of the two populations is b. 3 C4 d 4 ANS: B 4. Refer to Exhibit 10-1. The standard error for the difference between the two means is b....
Assume that a simple random sample has been selected from a normally distributed population and test the given claim. Identify the null ad alternative hypotheses, test statistic, P-value, and state the final conclusion that addresses the original claim In a manual on how to have a number one song, it is stated that a song must be no longer than 210 seconds. A simple random sample of 40 current hit songs results in a mean length of 227.2 sec and...
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