Joe hypothesizes that the students of an elite school will score higher than the general population....
Joe hypothesizes that the students of an elite school will score higher than the general population. He records a sample mean equal to 568 and states the hypothesis as μ = 568 vs μ > 568.
What type of test should Joe do?
-
Joe should not do any of the types of tests listed
-
Two-tailed test
-
Left-tailed test
-
Right-tailed test
Homework Answers
Joe should do a right tailed test, since we are testing whether the average is greater than 568.
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Joe hypothesizes that the students of an elite school will score
higher than the general population....
Susan hypothesizes that the students of a private school will score higher than the general population....
Susan hypothesizes that the students of a private school
will score higher than the general population. Susan records a
sample mean equal to 578 and states the hypothesis as
vs
.
Select the best description for this type of test.
A.)
Left-tailed test
B.)
Lower-tailed test
C.)
Right-tailed test
D.)
Two-tailed test
if you feel skeptical about answering, please just do
not answer.
u=572 u> 572
The government claims that the average age of Californians is 34 years Joe hypothesizes that the...
The government claims that the average age of Californians is 34 years Joe hypothesizes that the average age of the population of California is not equal to 34 years. He records a sample mean equal to 37 and states the hypothesis as μ = 34 vs μ ≠ 34. What type of test should Joe do?
The government claims that the average age of Texans is 38 years. Blake hypothesizes that the...
The government claims that the average age of Texans is 38 years. Blake hypothesizes that the average age of the population of Texas is not equal to 38 years. Blake records a sample mean equal to 41 and states the hypothesis as u = 38 vs u 38. Select the best description for this type of test. a.) Right-tailed test b.) Two-tailed test thing c.) Left-tailed test d.) Upper-tailed test
A researcher is interested in whether students who are musicians have higher intelligence scores than those...
A researcher is interested in whether students who are musicians have higher intelligence scores than those in the general population. The researcher predicts that playing a musical instrument is associated with higher intelligence test scores. The researcher selects a sample of 75 musicians from local high schools and gives them an intelligence test. She compares their average intelligence to that of students in the general population and finds that zobt = +1.92. This is a _____ test and the researcher...
A researcher wants to determine whether high school students who attend an SAT preparation course score...
A researcher wants to determine whether high school students who attend an SAT preparation course score significantly different on the SAT than students who do not attend the preparation course. For those who do not attend the course, the population mean is 1050 (? = 1050). The 16 students who attend the preparation course average 1150 on the SAT, with a sample standard deviation of 300. On the basis of these data, can the researcher conclude that the preparation course...
A researcher in interested in whether students who are musicians have higher intelligence test sc...
A researcher in interested in whether students who are musicians have higher intelligence test scores than students in the general population. The mean for the general population is 100. The researcher selects musicians from local high schools and gives them an intelligence test, with a mean of 105. SS 725 for the 2. 30 sample Null Hypothesis (Ho): μ State in words: Alternative Hypothesis (Ha): μ > State in words: df= t critical value (with α : .05): One-tailed or...
The Mean ACT score for 43 male high school students is 21.1 with a standard deviation...
The Mean ACT score for 43 male high school students is 21.1 with a standard deviation of 5.0. The mean ACT score for 56 female high school students was 20.9 with a standard deviation of 4.7. Test the claim that male and female students have equal test scores. Test at a level of significance of 0.01 Make sure you give an answer for each of the following: a) Claim in symbols and labeled Ho or Ha and labeled as the...
Determine a left-tailed, right-tailed, or two-tailed test from a given null and alternative hypothesis. David hypothesize that...
Determine a left-tailed, right-tailed, or two-tailed test from a given null and alternative hypothesis. David hypothesize that the average age of the population of Wyoming is less than 45 years. David records a sample mean equal to 42 and states the hypothesis as = 45 vs < 45. Select the best description for this type of test. a.) Two-tailed test b.) Left-tailed test c.) Upper-tailed test d.) Right-tailed test
The mean exam score for 44 male high school students is 20.1 and the population standard...
The mean exam score for 44 male high school students is 20.1 and the population standard deviation is 4.7. The mean exam score for 58 female high school students is 19.6 and the population standard deviation is 4.1. At a = 0.01, can you reject the claim that male and female high school students have equal exam scores? Complete parts (a) through (e). Click here to view page 1 of the standard normal distribution table. Click here to view page...
A guidance counselor claims that the high school students in a college preparation program have higher...
A guidance counselor claims that the high school students in a college preparation program have higher ACT scores than those in a general program. The sample mean ACT scores for 37 high school students in a college prep program is 22.7 and assume the population standard deviation is 3.5. The sample mean ACT scores for 35 high school students in a general prep program is 21.1. Assume the population standard deviation is 4.9. At = 0.02 , test the...
Susan hypothesizes that the students of a private school
will score higher than the general population. Susan records a
sample mean equal to 578 and states the hypothesis as
vs
.
Select the best description for this type of test.
A.)
Left-tailed test
B.)
Lower-tailed test
C.)
Right-tailed test
D.)
Two-tailed test
if you feel skeptical about answering, please just do
not answer.
u=572 u> 572
The government claims that the average age of Texans is 38 years. Blake hypothesizes that the average age of the population of Texas is not equal to 38 years. Blake records a sample mean equal to 41 and states the hypothesis as u = 38 vs u 38. Select the best description for this type of test. a.) Right-tailed test b.) Two-tailed test thing c.) Left-tailed test d.) Upper-tailed test
A researcher in interested in whether students who are musicians have higher intelligence test scores than students in the general population. The mean for the general population is 100. The researcher selects musicians from local high schools and gives them an intelligence test, with a mean of 105. SS 725 for the 2. 30 sample Null Hypothesis (Ho): μ State in words: Alternative Hypothesis (Ha): μ > State in words: df= t critical value (with α : .05): One-tailed or...
Determine a left-tailed, right-tailed, or two-tailed test from a given null and alternative hypothesis. David hypothesize that the average age of the population of Wyoming is less than 45 years. David records a sample mean equal to 42 and states the hypothesis as = 45 vs < 45. Select the best description for this type of test. a.) Two-tailed test b.) Left-tailed test c.) Upper-tailed test d.) Right-tailed test
The mean exam score for 44 male high school students is 20.1 and the population standard deviation is 4.7. The mean exam score for 58 female high school students is 19.6 and the population standard deviation is 4.1. At a = 0.01, can you reject the claim that male and female high school students have equal exam scores? Complete parts (a) through (e). Click here to view page 1 of the standard normal distribution table. Click here to view page...
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