Question
In: Statistics and Probability
The Wall Street Journal reported that the age at first startup for 25% of entrepreneurs was...
The Wall Street Journal reported that the age at first startup for 25% of entrepreneurs was 29 years of age or less and the age at first startup for 75% of entrepreneurs was 30 years of age or more. (a) Suppose a sample of 200 entrepreneurs will be taken to learn about the most important qualities of entrepreneurs. Show the sampling distribution of p where p is the sample proportion of entrepreneurs whose first startup was at 29 years of age or less. If required, round your answers to four decimal places. np = n(1-p) = E(p) = σ(p) = (b) Suppose a sample of 200 entrepreneurs will be taken to learn about the most important qualities of entrepreneurs. Show the sampling distribution of p where p is now the sample proportion of entrepreneurs whose first startup was at 30 years of age or more. If required, round your answers to four decimal places. np = n(1-p) = E(p) = σ(p) = (c) Are the standard errors of the sampling distributions different in parts (a) and (b)?
Solutions
orchestra answered 1 year agoRelated Solutions
The Wall Street Journal reported that the age at first startup for 90% of entrepreneurs was...
The Wall Street Journal reported that the age at first startup
for 90% of entrepreneurs was 29 years of age or less and the age at
first startup for 10% of entrepreneurs was 30 years of age or more.
(a) Suppose a sample of 200 entrepreneurs will be taken to learn
about the most important qualities of entrepreneurs. Show the
sampling distribution of p where p is the sample proportion of
entrepreneurs whose first startup was at 29 years of...
QUESTION 1 The Wall Street Journal reported that the average amount of time that a French...
QUESTION 1
The Wall Street Journal reported that the average
amount of time that a French person spends eating lunch at a
restaurant is 22 minutes. Perform a hypothesis test to determine if
a difference exists between the average time an American spends
eating lunch when compared to a person from France. The following
data represents the time, in minutes, that random French and
American diners spent at lunch. Assume that the population
variances are unequal.
American
21
17
17...
3) The Wall Street Journal reported that recipients of a bachelor degree with major in business...
3) The Wall Street Journal reported that recipients of a
bachelor degree with major in business receive average starting
salaries of $55,000 in 2017, with a standard deviation of $4,000. A
sample of 100 salaries from business majors collected in 2018 shows
a mean starting salary of $ $54,000. You are hired as a
statistician to investigate whether there are salary differences
for business majors in 2018 with respect to 2017. Allow for 5%
error on a two tail test....
3) The Wall Street Journal reported that recipients of a bachelor degree with major in business...
3) The Wall Street Journal reported that recipients of a
bachelor degree with major in business receive average starting
salaries of $55,000 in 2017, with a standard deviation of $4,000. A
sample of 100 salaries from business majors collected in 2018 shows
a mean starting salary of $ $54,000. You are hired as a
statistician to investigate whether there are salary differences
for business majors in 2018 with respect to 2017. Allow for 5%
error on a two tail test....
3) The Wall Street Journal reported that recipients of a bachelor degree with major in business...
3) The Wall Street Journal reported that recipients of a
bachelor degree with major in business receive average starting
salaries of $55,000 in 2017, with a standard deviation of $4,000. A
sample of 100 salaries from business majors collected in 2018 shows
a mean starting salary of $ $54,000. You are hired as a
statistician to investigate whether there are salary differences
for business majors in 2018 with respect to 2017. Allow for 5%
error on a two tail test....
2 a) The Wall Street Journal reported in January 2018 that the makers of many household...
2 a) The Wall Street Journal reported in January 2018 that the
makers of many household goods have increased the price of
household/personal care products by 2.9% from prices in the
previous year. If the elasticity of demand were 0.48, then we can
predict that the quantity of household products should have ______
( increased ;decreased ) by _________. Show calculation/method
here:
b). For this question, write the correct elasticity measure
below the product you think it matches best then...
As reported in the Wall Street Journal in November 2016, the 11 countries that make up...
As reported in the Wall Street Journal in November 2016, the 11
countries that make up the oil cartel OPEC agreed to each cut their
oil production over 2017 by 2% in an effort to raise the price of
oil and increase their profits (since the demand for oil is
inelastic). Let’s use a simplified one-off game with only two
countries (Iran and Saudi Arabia) to analyze the strategic
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The Wall Street Journal reported that 33% of taxpayers with adjusted gross incomes between $30,000 and...
The Wall Street Journal reported that 33% of taxpayers with adjusted gross incomes between $30,000 and $60,000 itemized deductions on their federal income tax return. The mean amount of deductions for this population of taxpayers was $15,071. Assume that the standard deviation is 82,790. Use 2-table. a. What is the probability that a sample of taxpayers from this income group who have itemized deductions will show a sample mean within $200 of the population mean for each of the following sample...
The Wall Street Journal reported that 33% of taxpayers with adjusted gross incomes between $30,000 and...
The Wall Street Journal reported that 33% of taxpayers with adjusted gross incomes between $30,000 and $60,000 itemized deductions on their federal income tax return. The mean amount of deductions for this population of taxpayers was $17,696. Assume that the standard deviation is o = $2,256. Use z-table. a. What is the probability that a sample of taxpayers from this income group who have itemized deductions will show a sample mean within $229 of the population mean for each of the...
The Wall Street Journal reported that 33% of taxpayers with adjusted gross incomes between $30,000 and...
The Wall Street Journal
reported that 33% of taxpayers with adjusted gross incomes between
$30,000 and $60,000 itemized deductions on their federal income tax
return. The mean amount of deductions for this population of
taxpayers was $17,743. Assume that the standard deviation is σ =
$2,581. Use z-table.
a. What is the probability that a sample of taxpayers from this
income group who have itemized deductions will show a sample mean
within $227 of the population mean for each of...
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