In a sample of 88 adults selected randomly from one town, it is found that 6...
In a sample of 88 adults selected randomly from one town, it is found that 6 of them have been exposed to a particular strain of the flu. At the 0.01 significance level, test the claim that the proportion of all adults in the town that have been exposed to this strain of the flue differs from the nationwide percentage of 8%. H0: p = 0.08 HA: p ≠ 0.08. α = 0.01 Test statistic: z = -0.41. P-Value = 0.6828 State your conclusion in terms of H0.
Do not reject HA
Reject HA
Do not reject H0.
Draw a new sample.
Reject H0.
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In a sample of 88 adults selected randomly from one town, it is
found that 6...
9. In a sample of 88 children selected randomly from one town, it is found 8...
9. In a sample of 88 children selected randomly from one town, it is found 8 of them suffer from asthma. Find the test statistic for a test claim that the proportion of all children in the town who suffer from asthma is equal to 11%. Answer choices: Z=0.56 Z=0.68 Z=-0.79 Z=-0.57
9a. In a sample of 88 children selected randomly from one town, it is found 8...
9a. In a sample of 88 children selected randomly from one town, it is found 8 of them suffer from asthma. Find the test statistic for a test claim that the proportion of all children in the town who suffer from asthma is equal to 11%. Answer choices: Z=0.56 Z=0.68 Z=-0.79 Z=-0.57
9) In a sample of 88 children selected randomly from one town, it is found 8...
9) In a sample of 88 children selected randomly from one town, it is found 8 of them suffer from asthma. Find the test statistic for a test of claim that the proportion of all children in the town who suffer from asthma is equal to 11%. O Z-0.56 O Z=-0.79 O Z-0.68 O2--0.57
A poll of 2,142 randomly selected adults showed that 92% of them own cell phones. The...
A poll of 2,142 randomly selected adults showed that 92% of them own cell phones. The technology display below results from a test of the claim that 91% of adults own cell phones. Use the normal distribution as an approximation to the binomial distribution, and assume a 0.05 significance level to complete parts (a) through (e). Test of p=0.91 vs p≠0.91 Sample X N Sample p 95% CI Z-Value P-Value 1 1970 2,142 0.919701 (0.908193,0.931210) 1.57 0.117 a. Is the...
In a sample of 167 children selected randomly from one town, it is found that 37...
In a sample of 167 children selected randomly from one town, it is found that 37 of them suffer from asthma. At the 0.05 significance leveltest the claim that the proportion of all children in the town who suffer from asthma is 11%. A public bus company official claims that the mean waiting time for bus number 14 during peak hours is less than 10 minutes. Karen took bus number 14 during peak hours on 18 different occasions. Her mean...
Suppose a sample of 49 paired differences that have been randomly selected from a normally distributed...
Suppose a sample of 49 paired differences that have been randomly selected from a normally distributed population of paired differences yields a sample mean d⎯⎯ =4.6d¯ =4.6 of and a sample standard deviation of sd = 7.6. (a) Calculate a 95 percent confidence interval for µd = µ1 – µ2. Can we be 95 percent confident that the difference between µ1 and µ2 is greater than 0? (Round your answers to 2 decimal places.) Confidence interval = [ , ] ;...
In a sample of 167 children selected randomly from one town, it is found that 37...
In a sample of 167 children selected randomly from one town, it is found that 37 of them suffer from asthma. At the 0.05 significance level, test the claim that the proportion of all children in the town who suffer from asthma is 11%. An article in a journal reports that 34% of American fathers take no responsibility for child care. A researcher claims that the figure is higher for fathers in the town of Littleton. A random sample of...
In a study of 807 randomly selected medical malpractice lawsuits, it was found that 497 of...
In a study of 807 randomly selected medical malpractice lawsuits, it was found that 497 of them were dropped or dismissed. Use a 0.01 significance level to test the claim that most medical malpractice lawsuits are dropped or dismissed. Which of the following is the hypothesis test to be conducted? A. H0: p>0.5 H1: p=0.5 B. H0: p=0.5 H1: p<0.5 C. H0: p≠0.5 H1: p=0.5 D. H0: p=0.5 H1: p≠0.5 E. H0: p<0.5 H1: p=0.5 F. H0: p=0.5 H1: p>0.5...
2) 2) In a sample of 167 children selected randomly from one town, it is found...
2) 2) In a sample of 167 children selected randomly from one town, it is found that 37 of them suffer from asthma. At the 0.05 significance level, test the claim that the proportion of all children in the town who suffer from asthma is 11%.
A random sample from normal population yielded sample mean=40.8 and sample standard deviation= 6.1, n =...
A random sample from normal population yielded sample mean=40.8 and sample standard deviation= 6.1, n = 15. H0: μ = 32.6, Ha: μ ≠ 32.6, α = 0.05. Perform the hypothesis test and draw your conclusion. Question 3 options: Test statistic: t = 5.21. P-value=0.00013. Reject H0. There is sufficient evidence to support the claim that the mean is different from 32.6. Test statistic: t = 5.21. P-value=1.9E-7 (0.00000019). Do not reject H0. There is not sufficient evidence to support...
9) In a sample of 88 children selected randomly from one town, it is found 8 of them suffer from asthma. Find the test statistic for a test of claim that the proportion of all children in the town who suffer from asthma is equal to 11%. O Z-0.56 O Z=-0.79 O Z-0.68 O2--0.57
In a sample of 167 children selected randomly from one town, it is found that 37 of them suffer from asthma. At the 0.05 significance level, test the claim that the proportion of all children in the town who suffer from asthma is 11%. An article in a journal reports that 34% of American fathers take no responsibility for child care. A researcher claims that the figure is higher for fathers in the town of Littleton. A random sample of...
2) 2) In a sample of 167 children selected randomly from one town, it is found that 37 of them suffer from asthma. At the 0.05 significance level, test the claim that the proportion of all children in the town who suffer from asthma is 11%.
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