Question
In: Statistics and Probability
According to a recent report, a sample of 360 one-year-old baby boys in the United States...
According to a recent report, a sample of 360 one-year-old baby boys in the United States had a mean weight of 25.5 pounds. Assume the population standard deviation is =σ5.1 pounds.Construct a 99.5% confidence interval for the mean weight of all one-year-old baby boys in the United States. Round the answer to at least one decimal place.
Solutions
Expert Solution
We are given that n=360 and 
25.5 pounds, 
5.1. We need to find out the 99.5%. Since the sample size is large
and 
is known, we shall use the normal distribution Z value to
calculate the confidence interval. Here 
(Since 1-0.005 = 0.995).
The formula to calculate the confidence interval is:
From the tables or from Excel, the value of 
can be found as 2.807. (In Excel, we need to use the function,
NORM.S.INV(0.0025. Substituting the values, we get
Confidence interval =
The 99.5% confidence interval rounded to one decimal place is
.
The lower limit is 24.7 pounds and the upper limit is 26.3 pounds.
orchestra answered 1 year agoRelated Solutions
The percentage of newborn baby boys in the United States is 51.2%. In a recent sample...
The percentage of newborn baby boys in the United States is
51.2%. In a recent sample of 964 births, 473 of the newborn babies
were boys. Use a level of significance of 0.02 to test the claim
that the percentage of newborn baby boys is not equal to 51.2%.
Show your work to receive credit.
Baby weights: According to a recent National Health Statistics Report, the weight of male babies less...
Baby weights: According to a recent National
Health Statistics Report, the weight of male babies less than 2
months old in the U.S. is normally distributed with mean 11.5
pounds and standard deviation 2.7 pounds.
a. What proportion of babies weigh more than 13
pounds?
b. What proportion of babies weigh less than 15
pounds?
c. What proportion of babies weigh between 10
and 14 pounds?
d. Is it unusual for a baby to weigh more than
17 pounds?
According to a report of COVID-19 death rates in the United States from CDC as of...
According to a report of COVID-19 death rates in the United
States from CDC as of April 6th 2020, New York has around 21.2 per
100,000 people for the death rate, which is the state with the
highest number of COVID-19 cases.
a) Obtain a point estimate for the population proportion of
Americans who have died from COVID-19 in New York state.
b) Verify that the requirements for constructing a confidence
interval about p are satisfied.
c) Construct a 90%...
According to a geographic report, in the United States, 20% of all families renting condos will...
According to a geographic report, in the United States, 20% of
all families renting condos will move
during a given year. A random sample of 200 families renting
condos in the Seattle Mero region
illustrated the fact that 56 families moved during the past
year. Does this evidence suggest that a larger
proportion of condo owners moved in the Seattle area, at the .01
significance level? State the null and
alternate hypotheses. Make the decision rule.
According to a recent study annual per capita consumption of milk in the United States is...
According to a recent study annual per capita consumption of
milk in the United States is 22.6 gallons. Being from the Midwest,
you believe milk consumption is higher there and wish to test your
hypothesis. A sample of 14 individuals from the Midwestern town of
Webster City was selected and then each person's milk consumption
was entered into the Microsoft Excel Online file below. Use the
data to set up your spreadsheet and test your hypothesis.
25.8
23.84
25.25
21.2...
According to a recent study annual per capita consumption of milk in the United States is...
According to a recent study annual per capita consumption of
milk in the United States is 21.5 gallons. Being from the Midwest,
you believe milk consumption is higher there and wish to test your
hypothesis. A sample of 14 individuals from the Midwestern town of
Webster City was selected and then each person's milk consumption
was entered into the Microsoft Excel Online file below. Use the
data to set up your spreadsheet and test your hypothesis.
Given Data:
Gallons of...
According to a recent study annual per capita consumption of milk in the United States is...
According to a recent study annual per capita consumption of
milk in the United States is 21.5 gallons. Being from the Midwest,
you believe milk consumption is higher there and wish to test your
hypothesis. A sample of 14 individuals from the Midwestern town of
Webster City was selected and then each person's milk consumption
was entered into the Microsoft Excel Online file below. Use the
data to set up your spreadsheet and test your hypothesis. 24.8
23.84 25.25 21.3...
According to a recent study annual per capita consumption of milk in the United States is...
According to a recent study annual per capita consumption of
milk in the United States is 21.5 gallons. Being from the Midwest,
you believe milk consumption is higher there and wish to test your
hypothesis. A sample of 14 individuals from the Midwestern town of
Webster City was selected and then each person's milk consumption
below.
Gallons of Milk
27.1
23.84
25.25
21
17.52
19.61
19.83
26.18
34.97
29.9
28.59
20.57
26.94
27.24
Develop a hypothesis test that can be...
According to a recent study annual per capita consumption of milk in the United States is...
According to a recent study annual per capita consumption of
milk in the United States is 21.5 gallons. Being from the Midwest,
you believe milk consumption is higher there and wish to test your
hypothesis. A sample of 14 individuals from the Midwestern town of
Webster City was selected and then each person's milk consumption
was entered into the Microsoft Excel Online file below. Use the
data to set up your spreadsheet and test your hypothesis.
Gallons of Milk
29.8...
According to a recent study annual per capita consumption of milk in the United States is...
According to a recent study annual per capita consumption of
milk in the United States is 23.8 gallons. Being from the Midwest,
you believe milk consumption is higher there and wish to test your
hypothesis. A sample of 14 individuals from the Midwestern town of
Webster City was selected and then each person's milk consumption
was entered into the Microsoft Excel Online file below. Use the
data to set up your spreadsheet and test your hypothesis.
Gallons of Milk
28.9...
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- The legal landscape is perpetually changing. Psychologists must remain abreast of these changes to avoid potentially...
- We are evaluating a project that costs $1.68 million, has a six-year life, and has no...
- In C++ Having call-by-reference allows one to use storeback parameters, i.e., parameters whose values are transmitted...
- You must evaluate a proposal to buy a new milling machine. The base price is $175,000,...
- “Triangle Guessing” game in Python The program accepts the lengths of three (3) sides of a...
- THIS PROGRAM HAS TO BE WRITTEN IN C Single function to perform the parity computation on...
- Consider a buffer system consisting of Benzoic acid (pKa = 4.20) and sodium benzoate, a) Would...
ADVERTISEMENT