Poverty and Calcium: A simple random sample of 18 people with incomes below the poverty level...

Poverty and Calcium: A simple random sample of 18 people with incomes below the poverty level gives the following daily calcium intake:

686 423 743 647 734 641

993 620 574 634 850 858

992 775 1113 672 879 609

At the 5% significance level do the data provides sufficient evidence to conclude that the mean calcium intake of all people with incomes below the poverty level is less than the RDA of 800 mg? Perform a Hypothesis Test.

Solutions

Expert Solution

orchestra answered 1 year ago

Next > < Previous

Related Solutions

What is the percentage of people living with an income below the federal poverty level? What...

What is the percentage of people living with an income below the federal poverty level? What is the number of cases of Emergency Department visits for Asthma in the 5-17 year? Select one neighborhood from each of the other 4 Boroughs and compare with your neighborhood (create a table )

The monthly incomes from a random sample of workers in a factory are shown below: 18,14,12,14,12...

The monthly incomes from a random sample of workers in a factory are shown below: 18,14,12,14,12 a. Compute the margin of error (in dollars) at 98% confidence b. Compute a 98% confidence interval for the mean of the population. Assume the population has a normal distribution. Give your answer in dollars.

If the confidence level is increased from 90% to 99% for a simple random sample of...

If the confidence level is increased from 90% to 99% for a simple random sample of size n, the width of the confidence interval for the mean μ will: Question 1 options: The answer cannot be determined from the information given. decrease. stay the same. increase.

A simple random sample of 1088 adults between the ages of 18 and 44 is conducted....

A simple random sample of 1088 adults between the ages of 18 and 44 is conducted. It is found that 274 of the 1088 adults smoke. Use a 0.05 significance level to test the claim that less than one-fourth of such adults smoke. Use P-value approach and determine conclusion. Select one: a. P-value = 0.889, fail to reject the alternative hypothesis b. P-value = 0.444, fail to reject the null hypothesis c. P-value = 0.444, reject the null hypothesis d....

.A simple random sample of 18 recent birth records at the local hospital was taken. In...

.A simple random sample of 18 recent birth records at the local hospital was taken. In the sample, the average birth weight was 3390 grams with a standard deviation of 179.8 grams. Assume that in the population of all babies born in this hospital, the birth weights follow a Normal distribution. (a) Find the 99% confidence interval for the mean birth weight of all babies born in this hospital. (b) How could we reduce the margin of error while keeping...

A simple random sample of size n equals 18 is drawn from a population that is...

A simple random sample of size n equals 18 is drawn from a population that is normally distributed. The sample mean is found to be x overbar equals 62 and the sample standard deviation is found to be s equals 20. Construct a 95% confidence interval about the population mean.

A simple random sample of 10 people shopping at Target found a sample mean age of...

A simple random sample of 10 people shopping at Target found a sample mean age of 27 and a sample standard deviation of 4.27 yrs. Can the market research team definitively declare that the mean age of the population of shoppers at Target is less than 30? Suppose that the level of significance is 0.05.

In a random sample of 100 persons with low incomes, 100 persons with average incomes, and...

In a random sample of 100 persons with low incomes, 100 persons with average incomes, and 100 persons with high incomes, there were, respectively, 40, 50, and 60 who love biking. (a) Use the 0.05 level of significance to test the null hypothesis θ1 = θ2 = θ3 = 0.5 (that the proportion of persons loving biking is 50% for all three income groups) against the alternative hypothesis that the three θ’s are not all equal to 0.5. In carrying...

In 2016, it was reported that 16% of 500 Utah families had incomes below the poverty...

In 2016, it was reported that 16% of 500 Utah families had incomes below the poverty level. At the same time, 11.3% of 450 Wyoming families had incomes below the poverty level. You need to find out if there was a significant difference in proportion of families with incomes below the poverty level in these two states. (a) State the research question. (b) State both the null and alternative hypotheses. (c) Determine the critical values (use 5% significance level). (d)...

In 2016, it was reported that 16% of 500 Utah families had incomes below the poverty...

In 2016, it was reported that 16% of 500 Utah families had incomes below the poverty level. At the same time, 11.3% of 450 Wyoming families had incomes below the poverty level. You need to find out if there was a significant difference in proportion of families with incomes below the poverty level in these two states. Determine the critical values (use 5% significance level).alculate the p-value for the test. (g) Assess the strength of your decision in part (d)...

Subjects