15.) The mean wingspan for the population of a species of bird is known to be 30 inches, and the standard deviation for the wingspan of the population of the species of bird is known to be 4 inches. A researcher believes that the mean wingspan is actually less. He measures the wingspan of a sample of 10 birds, and finds that the mean wingspan of the birds in the sample is 28 inches. For a = 0.01 decide whether the mean wingspan is actually lower. a. State the null hypothesis and the alternative hypothesis. b. Is the test left-tailed, right-tailed, or two-tailed? c. Find the test statistic 035) d. Find the critical value or p value e. Should you reject the null hypothesis? f. Summarize the results 19 Yazarifooyrt Hund belan buy luode b Au uz adi sommoz be
15.) The mean wingspan for the population of a species of bird is known to be 30 inches, and the standard deviation for the wingspan of the population of the species of bird is known to be 4 inches. A researcher believes that the mean wingspan is actually less. He measures the wingspan of a sample of 10 birds, and finds that the mean wingspan of the birds in the sample is 28 inches. For a = 0.01 decide whether the mean wingspan is actually lower. a. State the null hypothesis and the alternative hypothesis. b. Is the test left-tailed, right-tailed, or two-tailed? c. Find the test statistic 035) d. Find the critical value or p value e. Should you reject the null hypothesis? f. Summarize the results 19 Yazarifooyrt Hund belan buy luode b Au uz adi sommoz be
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 22PFA
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Transcribed Image Text:15.) The mean wingspan for the population of a species of bird is known to be 30 inches, and the
standard deviation for the wingspan of the population of the species of bird is known to be 4
inches. A researcher believes that the mean wingspan is actually less. He measures the
wingspan of a sample of 10 birds, and finds that the mean wingspan of the birds in the sample
is 28 inches. For a = 0.01 decide whether the mean wingspan is actually lower.
a. State the null hypothesis and the alternative hypothesis.
b. Is the test left-tailed, right-tailed, or two-tailed?
c. Find the test statistic
0222
5)
d. Find the critical value or p value
f. Summarize the results
2
e. Should you reject the null hypothesis?
2091
0112
Bulevfabitino od bris
Yazarifooyrt Hund belan buy luode b
20
Muzadi asosmmuz
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