Question
In: Statistics and Probability
It is estimated that the average annual expenditure on restaurants and takeout food is $2,573 per...
It is estimated that the average annual expenditure on restaurants and takeout food is $2,573 per househld in the US. Suppose this estimate is based on a sample of 80 household and that the population standard deviation is $650.
a)What is the 95% confidence interval for the population mean amount spent on restaurants and carryout food?
b)What is the 99% confidence interval for the population mean amount spent on restaurants and carryout food?
how do you do this on excel?
Solutions
orchestra answered 2 years agoRelated Solutions
1. The U.S. Bureau of Labor Statistics reports that the average annual expenditure on food and...
1. The U.S. Bureau of Labor Statistics reports that the average
annual expenditure on food and drink for all families is $5,700
(Money, December 2003). Assume that annual expenditure on food and
drink is normally distributed and that the standard deviation is
$1,500. (50 points) (A) What is the range of expenditures of the
24.2% of families with the lowest annual spending on food and
drink? (B) Assume total number of families is 500,000. How many
families spend more than...
“A sample of 60 individuals in the Midwest showed the sample average per person annual expenditure...
“A sample of 60 individuals in the Midwest showed the sample
average per person annual expenditure for prescription drugs of
$745. Suppose the population standard deviation expenditure for
prescription drugs is $300.”
a. Construct a 95% confidence interval estimate for the
population mean annual expenditure for prescription drugs in the
Midwest.
b. Is $838 in the interval from part a? What would this imply
about the population mean being $838?
c. what would happen to the width of the confidence...
“A sample of 60 individuals in the Midwest showed the sample average per person annual expenditure...
“A sample of 60 individuals in the Midwest showed the sample
average per person annual expenditure for prescription drugs of
$745. Suppose the population standard deviation expenditure for
prescription drugs is $300.” a. Construct a 95% confidence interval
estimate for the population mean annual expenditure for
prescription drugs in the Midwest. b. Is $838 in the interval from
part a? What would this imply about the population mean being $838?
c. Without calculating: what would happen to the width of...
“A sample of 60 individuals in the Midwest showed the sample average per person annual expenditure...
“A sample of 60 individuals in the Midwest showed the sample
average per person annual expenditure for prescription drugs of
$745. Suppose the population standard deviation expenditure for
prescription drugs is $300.”
a. Construct a 95% confidence interval estimate for the
population mean annual expenditure for prescription drugs in the
Midwest.
b. Is $838 in the interval from part a? What would this imply
about the population mean being $838?
c. Without calculating: what would happen to the width of...
“A sample of 60 individuals in the Midwest showed the sample average per person annual expenditure...
“A sample of 60 individuals in the Midwest showed the sample
average per person annual expenditure for prescription drugs of
$745. Suppose the population standard deviation expenditure for
prescription drugs is $300.”
a. Construct a 95% confidence interval estimate for the
population mean annual expenditure for prescription drugs in the
Midwest.
b. Is $838 in the interval from part a? What would this imply
about the population mean being $838?
c. Without calculating: what would happen to the width of...
A magazine article reported that 13% of adults buy takeout food every day. A fast food...
A magazine article reported that 13% of adults buy takeout food
every day. A fast food restaurant manager surveyed 250 customers
and found that 40 said that they purchased takeout food everyday.
At 0.01 level of significance, is there sufficient evidence to
believe the article’s claim? Express numerical answers in two
decimals only.
Is the test one-tailed?
What is the sample proportion?
What is the null hypothesis?
What is the alternative hypothesis?
What is the critical value?
What is the...
According to AARP, in 2008, 49% of all annual expenditure on restaurant food was by Americans...
According to AARP, in 2008, 49% of all annual expenditure on
restaurant food was by Americans age 50+. In fact AARP claims the
average annual expenditure for Americans age 50+ on restaurant food
in 2008 was $1960. Suppose a 2015 study randomly sampled 42
Americans age 50+ and found an average annual expenditure on
restaurant food of $2145 with a standard deviation of $600. Is
there reason to believe that the average annual expenditure for
Americans age 50+ on restaurant...
Suppose we are dealing with the null hypothesis that the average food expenditure of all families...
Suppose we are dealing with the null hypothesis that the average
food expenditure of all families in Atlanta is 20 dollars a day. To
test the hypothesis we collect a sample of n = 100. We get the
sample mean of 22 and the sample variance of 25. Write down the
value of t-statistics and corresponding p-value. Will you reject
the null? Explain. Only yes or no answer will not be accepted.
The average expenditure per student (based on average daily attendance) for a certain school year was...
The average expenditure per student (based on average daily
attendance) for a certain school year was $10,337 with a population
standard deviation of $1560. A survey for the next school year of
150 randomly selected students resulted in a sample mean of $10,
798. Find the 95% confidence level? Should the null hypothesis be
rejected? please write in the computer.
The average expenditure per student for a certain school year was $10337 with a population standard...
The average expenditure per student for a certain school year
was $10337 with a population standard deviation of $1560. A survey
for the next school year of 150 randomly selected students resulted
in a sample mean of $10798. At α =0.01 level of significance, can
it be concluded that the average expenditure has changed?
(10 pts) Suppose when you were visiting universities and
deciding which to attend, the admission officers at Tennessee
Wesleyan(TW) claimed TW students graduate in 4.25 years...
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