Assume that the population lengths of adult male killer whales follow approximately a normal distribution. A recent article published in the journal Zoology Now states that the mean of this population is6.99 m. You want to test the claim in the article, so you select a random sample of 10adult male killer whales and record the lengths of each. Follow these steps to construct a confidence interval for the 90%for the population mean of all lengths of adult male killer whales. Then, indicate whether the confidence interval that you construct contradicts the article's statement. (If necessary, you can refer to a list of formulas.) (to) Click "Take Sample" to see the results of your random sample. Take a sample Sample size: 0 Point estimate: 0 number of killer whales Sample standard deviation: 10 sample mean Enter the values for the sample size, point estimate of the mean, sample standard deviation, and critical value that you need to construct the confidence interval for the 90%. (Choose the correct critical value from the critical value table provided). When finished, click on "Calculate". Standard error: 7,241 Error range: sample standard deviation 1,436 critical values OH = 3.250

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 26PFA
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ANSWER PART A, B, AND C

PART C

(c)The confidence interval of the 90% What built contradicts the statement stated in the article?
Choose the best answer from the following options:
 
___ No, the confidence interval does not contradict the statement. the mean of 6.99 m of the article is within the confidence interval of the 90%.
 
___ No, the confidence interval does not contradict the statement. the mean of 6.99 m of the article is outside the confidence interval of the 90%.
 
___ Yes, the confidence interval contradicts the statement. the mean of 6.99 m of the article is within the confidence interval of the 90%.
 
___ Yes, the confidence interval contradicts the statement. the mean of 6.99 m of the article is outside the confidence interval of the 90%
.
Assume that the population lengths of adult male killer whales follow approximately a normal distribution. A recent article published in the journal Zoology Now
states that the mean of this population is6.99 m. You want to test the claim in the article, so you select a random sample of 10adult male killer whales and record
the lengths of each.
Follow these steps to construct a confidence interval for the90%for the population mean of all lengths of adult male killer whales. Then, indicate whether the
confidence interval that you construct contradicts the article's statement. (If necessary, you can refer to a list of formulas .)
(to) Click "Take Sample" to see the results of your random sample.
Take a sample
Sample size:
10
Point estimate:
0
number of killer whales
Sample standard deviation:
10
sample mean
Enter the values for the sample size, point estimate of the mean, sample standard deviation, and critical value that you need to construct the
confidence interval for the90%. (Choose the correct critical value from the critical value table provided). When finished, click on "Calculate".
Standard error:
7,241
Error range:
sample standard
deviation
1,436
X
S
critical values
1005 3,250
Transcribed Image Text:Assume that the population lengths of adult male killer whales follow approximately a normal distribution. A recent article published in the journal Zoology Now states that the mean of this population is6.99 m. You want to test the claim in the article, so you select a random sample of 10adult male killer whales and record the lengths of each. Follow these steps to construct a confidence interval for the90%for the population mean of all lengths of adult male killer whales. Then, indicate whether the confidence interval that you construct contradicts the article's statement. (If necessary, you can refer to a list of formulas .) (to) Click "Take Sample" to see the results of your random sample. Take a sample Sample size: 10 Point estimate: 0 number of killer whales Sample standard deviation: 10 sample mean Enter the values for the sample size, point estimate of the mean, sample standard deviation, and critical value that you need to construct the confidence interval for the90%. (Choose the correct critical value from the critical value table provided). When finished, click on "Calculate". Standard error: 7,241 Error range: sample standard deviation 1,436 X S critical values 1005 3,250
(b)
Sample standard deviation:
0
critical value:
0
Calculate
●
0.000
Based on the sample, plot the confidence interval of the90%for the population mean of all lengths of adult male killer whales.
Enter the upper bound and lower bound values on the graph to display the confidence interval.
Under the dot (◆), enter the statementfrom the article.
0.000
2.000
Error range:
Confidence interval of 90%:
4.000
90% confidence interval:
5.000
6.000
10.065 3,250
Yo040=2,821
0045 2,262
YO30=1,833
Yo160=1,383
8.000
10.000
10.000
Transcribed Image Text:(b) Sample standard deviation: 0 critical value: 0 Calculate ● 0.000 Based on the sample, plot the confidence interval of the90%for the population mean of all lengths of adult male killer whales. Enter the upper bound and lower bound values on the graph to display the confidence interval. Under the dot (◆), enter the statementfrom the article. 0.000 2.000 Error range: Confidence interval of 90%: 4.000 90% confidence interval: 5.000 6.000 10.065 3,250 Yo040=2,821 0045 2,262 YO30=1,833 Yo160=1,383 8.000 10.000 10.000
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