Question

Use the traditional method of hypothesis testing to test the given claim about the means of...

Use the traditional method of hypothesis testing to test the given claim about the means of two populations. Assume that two dependent samples have been randomly selected from normally distributed populations. 10) The table below shows the weights of seven subjects before and after following a particular diet for two months.

Subject A B C D E F G

Before 182 178 199 194 151 188 170

After 175 169 197 199 137 190 158

Using a 0.01 level of significance, test the claim that the diet is effective in reducing weight.

Homework Answers

Answer #1
Before After Difference(d)
182 175 7
178 169 9
199 197 2
194 199 -5
151 137 14
188 190 -2
170 158 12
Total 37

Claim: The diet is effective in reducing weight.

The null and alternative hypothesis is

Level of significance = 0.01

Sample size = n = 7

Sample mean of difference = = 5.2857

Sample standard deviation of difference = = 7.1581

Test statistic is

Degrees of freedom = n - 1 = 7 - 1 = 6

Critical value = 3.143   ( Using t table)

Test statistic < critical value we fail to reject null hypothesis.

Conclusion:

The diet is NOT effective in reducing weight.

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Use the traditional method of hypothesis testing to test the given claim about the means of...
Use the traditional method of hypothesis testing to test the given claim about the means of two populations. Assume that two dependent samples have been randomly selected from normally distributed populations. The table below shows the weights of seven subjects before and after following a particular diet for two months. Subject A B C D E F G Before: 182 178 199 194 151 188 170 After: 175 169 197 199 137 190 158 Using a 0.01 level of significance,...
115 124 132 134 136 137 138 138 139 140 141 141 144 144 145 145...
115 124 132 134 136 137 138 138 139 140 141 141 144 144 145 145 145 146 146 148 150 150 150 151 151 151 151 154 154 156 156 156 156 157 158 159 159 159 159 160 161 161 161 161 162 162 163 164 164 164 164 165 165 165 166 166 166 166 168 168 168 168 168 168 169 169 169 169 170 170 171 171 172 173 173 173 173 173 174 174...
Use the traditional method of hypothesis testing to test thegiven claim about the means of...
Use the traditional method of hypothesis testing to test the given claim about the means of two populations. Assume that two dependent samples have been randomly selected from normally distributed populations.5) A coach uses a new technique in training middle distance runners. The times for 8 different athletes to run 800 meters before and after this training are shown below. Athlete A B C D E F G H Time before training (seconds) 116 115.9 118.6 109.7 111.5 113 119...
The table below shows the weights of 9 subjects before and after following a particular diet...
The table below shows the weights of 9 subjects before and after following a particular diet for two months. Subject A B C D E F G H I Before 168 180 157 132 202 124 190 210 171 After 162 178 145 125 171 126 180 195 163 Use a 0.01 significance level to test the claim that the particular diet is effective in reducing subjects' weights.
When subjects were treated with a​ drug, their systolic blood pressure readings​ (in mm​ Hg) were...
When subjects were treated with a​ drug, their systolic blood pressure readings​ (in mm​ Hg) were measured before and after the drug was taken. Results are given in the table below. Assume that the paired sample data is a simple random sample and that the differences have a distribution that is approximately normal. Using a 0.05 significance​ level, is there sufficient evidence to support the claim that the drug is effective in lowering systolic blood​ pressure? Before 189 175 188...
Open Three Hospitals data. SETUP: It is believed that the number of injuries recorded in hospital...
Open Three Hospitals data. SETUP: It is believed that the number of injuries recorded in hospital 1 is different from the number of injuries recorded in hospital 2. Given the data your job is to confirm or disprove this assertion. 10. What test/procedure did you perform? (4 points) a. Regression b. Two sided t-test c. One sided t-test d. Confidence Interval 11. What is the statistical interpretation? (4 points) a. Average of data is inconsistent with the claim b. P-value...
Is there an association between patient BMI and cholesterol level at screening? Consider overweight, normal and...
Is there an association between patient BMI and cholesterol level at screening? Consider overweight, normal and underweight categories for BMI. Do a Chi-Square. I am having trouble finding the test statistics. I picked the level of significance to be 5%. Patient ID Drug Sex Age Height BMI Weight Cholesterol 1 B F 22 67.13 21.52787 138 197 2 B M 22 63 20.36911 115 181 3 B F 22 72 25.76582 190 190 4 A M 22 69 16.98068 115...
Pat.# Before After 1 195 125 To the left is 2 datasets measured for a sample...
Pat.# Before After 1 195 125 To the left is 2 datasets measured for a sample of 107 patients with the high cholesterol level before and after taking medication. Obtain the following for both sets: 2 208 164 3 254 152 1- the mean, mode and median 4 226 144 5 290 212 2- the variance and standard deviation 6 239 171 7 216 164 3- First, second and third quartiles 8 286 200 9 243 190 10 217 130...
A pharmaceutical company claims that its new drug reduces systolic blood pressure. The systolic blood pressure...
A pharmaceutical company claims that its new drug reduces systolic blood pressure. The systolic blood pressure (in millimeters of mercury) for nine patients before taking the new drug and 22 hours after taking the drug are shown in the table below. Is there enough evidence to support the company's claim? Let d=(blood pressure before taking new drug)−(blood pressure after taking new drug)d=(blood pressure before taking new drug)−(blood pressure after taking new drug). Use a significance level of α=0.01α=0.01 for the...
30.If one were to perform a hypothesis test using the following    hypotheses: H0: shipment is GOOD...
30.If one were to perform a hypothesis test using the following    hypotheses: H0: shipment is GOOD and H1: shipment is BAD      Which of the two types of errors is called the Producer’s risk?    a. Type I (alpha) b. Type II (beta) c. Both (a) and (b) d. Neither (a) nor (b) 31. When the sample size as a proportion of the population size (n/N) gets larger, the value of the finite correction multiplier approaches which value? a. 0 b. 1...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT