Question

Use either the critical value or the P-value method you are not required to use both....

Use either the critical value or the P-value method you are not required to use both.

  1. State the claim and the hypothesis.
  2. Find the critical value(s) and describe the critical (rejection) region You can choose to use the P-value method in this case state the P-value after the test value.
  3. Compute the test value (statistic)
  4. Make a decision
  5. Summarize the results (conclusion)

A study was conducted of babies born to mothers who use cocaine during pregnancy, and the following sample data were obtained for weight at birth: n = 190, x bar = 2700 g, s = 645 g. Use an α = 0.05 significance level to test the claim that the standard deviation of birth weight of infants born to mothers who use cocaine is different from the standard deviation of 696g for birth weight of infants born to mothers who do not use cocaine during pregnancy.

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

Homework Answers

Answer #1

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
For each of the following exercises: For each test use either the critical value or the...
For each of the following exercises: For each test use either the critical value or the P-value method you are not required to use both. a.) State the claim and the hypothesis. b.) Find the critical value(s) and describe the critical (rejection) region You can choose to use the P-value method in this case state the P-value after the test value. c.) Compute the test value (statistic) d.) Make a decision e.) Summarize the results (conclusion) A study was conducted...
Assume that a simple random sample is selected from a normally distributed population. A study was...
Assume that a simple random sample is selected from a normally distributed population. A study was conducted of babies born to mothers who use cocaine during pregnancy, and the following sample data were obtained for weights at birth: n = 192,  = 2700 grams, s = 651 grams. a) Use a 0.05 significance level to test the claim that the standard deviation of birth weights of infants born to mothers who use cocaine is different from the standard deviation of 696...
3) In a study of effects of prenatal cocaine use on infants, the following sample data...
3) In a study of effects of prenatal cocaine use on infants, the following sample data were obtained for weights at birth: n= 190, x(bar)= 2700 g, s= 645 g. Use 5% level of significance to test the claim that the weights of babies born to cocaine users have a mean that is less than mean of 3103 g for babies born to mothers who do not use cocaine. (Please label answers (a), (b), (c) etc. points will be deducted...
The mean birth weight of male babies born to 121 mothers taking a vitamin supplement is...
The mean birth weight of male babies born to 121 mothers taking a vitamin supplement is 3.633.63 kilograms with a standard deviation of 0.630.63 kilogram. Use a 0.05 significance level to test the claim that the mean birth weight of all babies born to mothers taking the vitamin supplement is equal to 3.39​ kilograms, which is the mean for the population of all male babies. State the null and alternative hypotheses. Find the z-score and the P value and make...
Assume that a simple random sample has been selected from a normally distributed population and test...
Assume that a simple random sample has been selected from a normally distributed population and test the given claim. In a study of the effects of prenatal cocaine use on infants, the following sample data were obtained for weights at birth: n = 193, = 2731 grams, s = 662 grams. a) Use a 0.01 significance level to test the claim that babies born to cocaine users have a mean weight that is less than the mean of 3103 grams...
Assume that a simple random sample has been selected from a normally distributed population and test...
Assume that a simple random sample has been selected from a normally distributed population and test the given claim. In a study of the effects of prenatal cocaine use on infants, the following sample data were obtained for weights at birth: n = 195,  = 2600 grams, s = 621 grams. a) Use a 0.01 significance level to test the claim that babies born to cocaine users have a mean weight that is less than the mean of 3103 grams for...
A small study (n=10) is designed to assess if there is an association between smoking in...
A small study (n=10) is designed to assess if there is an association between smoking in pregnancy and low birth weight. Low birth weight babies are those born less than 5.5 pounds. The following data represent the birth weights, in pounds, of babies born to mothers who reported smoking in pregnancy and those who did not. Mother smoked in pregnancy: 5.0, 4.2, 4.8, 3.3, 3.9 Mother did not smoke during pregnancy: 5.1, 4.9, 5.3, 5.4, 4.6 Is there a significant...
1) Use either the critical value or p-value method for testing hypotheses. 2) Identify the null...
1) Use either the critical value or p-value method for testing hypotheses. 2) Identify the null and alternative hypotheses, test statistic, P-value (or range of P-values), and critical value(s). 3) State your final conclusion that addresses the original claim. Include a confidence interval as well and restate this in your original conclusion. Any basketball fan know that Shaquille O’Neal, one of the NBA’s most dominant centers of the last twenty years, always had difficulty shooting free throws. Over the course...
1) Use either the critical value or p-value method for testing hypotheses. 2) Identify the null...
1) Use either the critical value or p-value method for testing hypotheses. 2) Identify the null and alternative hypotheses, test statistic, P-value (or range of P-values), and critical value(s). 3) State your final conclusion that addresses the original claim. Include a confidence interval as well and restate this in your original conclusion. Two Polish math professors and their students spun a Belgian euro coin 250 times. It landed on heads 140 times. One of the professors concluded that the coin...
Find using traditional method or P-value method. Identify the null and alternative hypothesis, test statistic, critical...
Find using traditional method or P-value method. Identify the null and alternative hypothesis, test statistic, critical value(s) or P=value (or range of P-values) as appropriate, and state the final conclusion that addresses the original claim. A company claims that the mean weight of the oatmeal in its packets is 14oz. The weights in ounces of the oats in a random sample of 8 of the oat packets are listed below 14.6 13.8 14.1 13.7 14.0 14.4 13.6 14.2 Test the...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT