Question

A random sample of 130 adult males was selected as part of a study on weight...

A random sample of 130 adult males was selected as part of a study on weight loss. The average weight at the beginning of the study was 265 pounds with a standard deviation of 22 pounds. Assuming the weight is normally distributed, provide a 99% confidence interval for the mean weight at the start of the study. You MUST show your work to receive full credit.

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

PLEASE LIKE IT RAISE YOUR THUMBS UP

IF YOU ARE HAVING ANY DOUBT FEEL FREE TO ASK IN COMMENT SECTION

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A random sample of 30 households was selected as part of a study on electricity usage,...
A random sample of 30 households was selected as part of a study on electricity usage, and the number of kilowatt-hours (kWh) was recorded for each household in the sample for the March quarter of 2006. The average usage was found to be 375kWh. In a very large study in the March quarter of the previous year it was found that the standard deviation of the usage was 81kWh. Assuming the standard deviation is unchanged and that the usage is...
A random sample of 45 households was selected as part of a study on electricity usage.,...
A random sample of 45 households was selected as part of a study on electricity usage., and the number of kilowatt-hours (kWh) was recoded for each household. The average usage was found to be 375 kWh. The population standard deviation is given as 51 KWh Assuming the usage is normally distributed, find the margin of error for a 99% confidence interval for the mean. [3 marks] 12.5 14.9 19.6 22.8
A random sample of 30 households was selected as part of a study on electricity usage,...
A random sample of 30 households was selected as part of a study on electricity usage, and the number of kilowatt-hours (kWh) was recorded for each household in the sample for the last quarter of 2010. The average usage was found to be 450 kWh. In a very large study in the last quarter of the previous year, it was found that the standard deviation of the usage was 81 kWh. Assuming that the standard deviation is unchanged and that...
Assume the weight of adult males is normally distributed. The following weight of adult males in...
Assume the weight of adult males is normally distributed. The following weight of adult males in lbs taken in a recent study. 150 152 154 155 156 158 158 160 161 163 164 165 165 166 166 166 167 167 168 169 171 172 174 174 176 177 178 179 179 181 183 Assume the standard deviation for weight is 10 lbs.      e. Roughly 25% of men would be below what weight? f. A recent boat seat is graded for...
Obesity is a topic of ongoing health concern. A random sample of 25 adult males were...
Obesity is a topic of ongoing health concern. A random sample of 25 adult males were examined and found to be an average of 18 pounds overweight, with a standard deviation of 10 pounds. These results will be used to address the following statistical question: Do these results provide evidence that, on average, adult males are overweight more than the 15 pounds reported by a television documentary? 1. Using appropriate notation, state the null hypothesis and the alternative hypothesis. 2....
A sample of 7 adult elephants has an average weight of 12,800 pounds. the standard deviation...
A sample of 7 adult elephants has an average weight of 12,800 pounds. the standard deviation for the sample was 21 pounds.find the 99% confidence interval of the population mean for the weight of adult elephants.assume the value is normally distributed. use a graphing calculator and round up answer to the nearest whole number.
Assume a 2015 Gallup Poll asked a national random sample of 482 adult women to state...
Assume a 2015 Gallup Poll asked a national random sample of 482 adult women to state their current weight. Assume the mean weight in the sample was ?¯=164. We will treat these data as an SRS from a normally distributed population with standard deviation ?=36 pounds. Give a 90% confidence interval for the mean weight of adult women based on these data. Enter the upper and lower values of your confidence interval into the spaces provided rounded to two decimal...
In a random sample of 678 adult males 20 to 34 years of age, it was...
In a random sample of 678 adult males 20 to 34 years of age, it was determined that 58 of them have hypertension(high blood pressure). a) what conditions must be checked in order to calculate a 96% confidence interval? b) Construct a 96% confidence for the proportion of adult males 20 to 34 years of age who have hypertension. Round the endpoints to 3 decimal places. c) If we wish to conduct our own study to determine the proportion of...
1.14. A random sample of 22 shearing pins is taken in a study of the Rockwell...
1.14. A random sample of 22 shearing pins is taken in a study of the Rockwell hardness of the pin head. Measurements on the Rockwell hardness are made for each of the 22, yielding an average value of 58.50 with a sample standard deviation of 15.5. Assuming the measurements are normally distributed. Construct a 95% two-sided confidence interval for the mean Rockwell hardness. (2 Points) If true standard deviation is equal to 12, how large a sample size is necessary...
A simple random sample of electronic components will be selected to test for the mean lifetime...
A simple random sample of electronic components will be selected to test for the mean lifetime in hours. Assume that component lifetimes are normally distributed with population standard deviation of 31 hours. How many components must be sampled so that a 99% confidence interval will have margin of error of 6 hours? Write only an integer as your answer.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT