Question

It is believed that nearsightedness affects about 8% of all children. In a random sample of...

It is believed that nearsightedness affects about 8% of all children. In a random sample of 194 children, 21 are nearsighted. Conduct a hypothesis test for the following question: do these data provide evidence that the 8% value is inaccurate? Use α = 0.05.

Because the p-value is （ ） than α = 0.05, we （ ） the null hypothesis. The sample （ ） provide convincing evidence that the fraction of children who are nearsighted is different from 0.08.

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

Homework Answers

Answer #2

answered by: anonymous
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
Nearsighted. It is believed that nearsightedness affects about 8% of all children. In a random sample...
Nearsighted. It is believed that nearsightedness affects about 8% of all children. In a random sample of 194 children, 21 are nearsighted. Conduct a hypothesis test for the following question: do these data provide evidence that the 8% value is inaccurate? What are the null and alternative hypotheses? H 0 : p = Incorrect H A : p ≠ Incorrect Check the sample size to verify that we can use the normal model to answer this question. n p 0...
It is believed that nearsightedness affects about 8% of all children. In a random sample of...
It is believed that nearsightedness affects about 8% of all children. In a random sample of 194 children, 21 are nearsighted. (a) Construct hypotheses appropriate for the following question: do these data provide evidence that the 8% value is inaccurate? Ho: p = .08 Ha: p ≠ .08 Ho: p = .08 Ha: p > .08 Ho: p = .08 Ha: p < .08 (b) What proportion of children in this sample are nearsighted? (round to four decimal places) (c)...
It is believed that nearsightedness affects 8 % of children. In a Random Sample of 194...
It is believed that nearsightedness affects 8 % of children. In a Random Sample of 194 children, 21 are nearsighted. Does the data prove that 8% is an inaccurate value? Use 1% level of significance. A. State the null Hypotheses B State the alternative hypotheses C. One or Two Tail Test? D. State the critical Value of the hypothesis test. E. Illustrate the rejection region using a graph. F. What is the test Statistic? G. What is the P value...
It is believed that nearsightedness affects about 8% of all children. In a random sample of...
It is believed that nearsightedness affects about 8% of all children. In a random sample of 194 children, 21 are nearsighted. 1. What proportion of children in this sample are nearsighted? (round to four decimal places) 2. Given that the standard error of the sample proportion is 0.0195 and the point estimate follows a nearly normal distribution, calculate the test statistic (use the Z-statistic). Z =  (please round to two decimal places) 3. What is the p-value for this hypothesis test?...
It the 1980s, it was generally believed that congenital abnormalities affected about 8 % of a...
It the 1980s, it was generally believed that congenital abnormalities affected about 8 % of a large nation's children. Some people believe that the increase in the number of chemicals in the environment has led to an increase in the incidence of abnormalities. A recent study examined 374 randomly selected children and found that 47 of them showed signs of an abnormality. Is this strong evidence that the risk has increased?(Consider a P-value of around 5 % to represent reasonable...
The analysis of a random sample of 550 households in a suburb of a large city...
The analysis of a random sample of 550 households in a suburb of a large city indicates that a 92% confidence interval for the mean family income is ($45,700, $59,150). Could this information be used to conduct a test of the null hypothesis H0: µ = 44,000 against the alternative hypothesis Ha: µ ≠ 44,000 at the α = 0.08 level of significance? Yes, because $44,000 is not contained in the 92% confidence interval, the null hypothesis would be rejected...
The mean family income for a random sample of 600 suburban households in Loganville shows that...
The mean family income for a random sample of 600 suburban households in Loganville shows that a 95 percent confidence interval is ($43,100, $59,710). Alma is conducting a test of the null hypothesis H0: µ = 42,000 against the alternative hypothesis Ha: µ ≠ 42,000 at the α = 0.05 level of significance. Does Alma have enough information to conduct a test of the null hypothesis against the alternative? A No, because the value of σ is not known B...
In a sample of 165 children selected randomly from one town, it is found that 30...
In a sample of 165 children selected randomly from one town, it is found that 30 of them suffer from asthma. At the 0.05 significance level, do the data provide sufficient evidence to conclude that the percentage of all children in the town who suffer from asthma is different from 11%? Use the P-value approach. a) State the null and alternative hypotheses symbolically. b) Which test procedure is appropriate to perform the required hypothesis test? Please check the assumptions. c)...
6.16 Is college worth it? Part I: Among a simple random sample of 331 American adults...
6.16 Is college worth it? Part I: Among a simple random sample of 331 American adults who do not have a four-year college degree and are not currently enrolled in school, 48% said they decided not to go to college because they could not afford school. (a) A newspaper article states that only a minority of the Americans who decide not to go to college do so because they cannot afford it and uses the point estimate from this survey...
In a sample of 160 children selected randomly from one town, it is found that 32...
In a sample of 160 children selected randomly from one town, it is found that 32 of them suffer from asthma. At the 0.05 significance level, suppose we want to test if these data provide sufficient evidence to conclude the proportion of all children in the town who suffer from asthma is different from 14%? A. State the null and alternative hypotheses. (b) Based on the sample information, calculate the test statistic. (c) Find the P-value. (d) Test the hypothesis...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT