Question
In: Statistics and Probability
The National Institute for Sports estimates that 13% of all college athletes use steroids. A new...
The National Institute for Sports estimates that 13% of all college athletes use steroids. A new urine test correctly diagnoses the presence of steroids in 97% of athletes that have used steroids in the past 18 months. The test gives a positive result to 14% of athletes who do not use steroids (a false positive).
What is the probability an athlete uses steroids given that he has a positive result?
Solutions
orchestra answered 2 years agoRelated Solutions
The national average of college students on a test of sports trivia is 50 with a...
The national average of college students on a test of sports
trivia is 50 with a standard deviation of 5. A sportscaster is
interested in whether BC students know less about sports than the
national average. The sportscaster tests a random sample of 25 BC
students and obtains a mean of 48 Use an alpha level of 0.05. Is
this a one-tailed or two tailed test?
The national average of college students on a test of sports trivia is 50 with a...
The national average of college students on a test of sports
trivia is 50 with a standard deviation of 5. A sportscaster is
interested in whether BC students know less about sports than the
national average. The sportscaster tests a random sample of 25 BC
students and obtains a mean of 48 Use an alpha level of 0.05.
1. State the z score(s) that form the boundaries of the critical
region. Use an alpha level of 0.05.
2. Calculate the...
According to the National Institute on Alcohol Abuse and Alcoholism, 19% of college students aged 18...
According to the National Institute on Alcohol Abuse and
Alcoholism, 19% of college students aged 18 to 24 abuse
alcohol.1
Describe the population proportion of interest in words. What
value are we assuming for this proportion?
What is the sampling distribution for the sample proportion of
college students aged 18 to 24 that abuse alcohol from a random
sample of size 100 from this population? Make sure to explain why
the appropriate conditions are met or not met as part...
According to the Institute for Students in Shackles, 70% of all college students in a recent...
According to the Institute for Students in Shackles, 70% of all
college students in a recent year graduated with student loan
debt. The University of Florida reports that only 52% of
its graduates from a random sample of 500 students have student
loan debt. Use a hypothesis test to determine if there is enough
evidence to support UF’s claim that student loan debt is less.
a) State your null and alternative hypothesis.
b) Find p-hat, SD, Z, and the P-value
*Include all calculations and no excel please* A buyer for National Sports must place orders with...
*Include all calculations and no excel please*
A buyer for National Sports must place orders with Saucony prior
to the time the shows will be sold as they are manufactured
overseas and shipping takes several months. The buyer
must decide on November 1 how many pairs of the latest model
Saucony’s to order for sale during the coming summer season.
Saucony’s ordering policy requires retailers to purchase shoes in
lots of 100 pair. Saucony charges National Sports $45
per pair. National retails them...
The national association of realtors estimates that 23% of all homes purchased in 2004 were considered...
The national association of realtors estimates that 23% of all
homes purchased in 2004 were considered investments properties. If
a sample of 800 homes sold in 2004 is obtained what is the
probability that between 175 and 200 homes are going to be used as
a investment property?
The National Association of Realtors estimates that 23% of all homes purchased in 2004 were considered...
The National Association of Realtors estimates that 23% of all
homes purchased in 2004 were considered investment properties. If a
sample of 800 homes sold in 2004 is obtained what is the
probability that at most 175 homes are going to be used as
investment property? Round to four decimal places, if
necessary.
1. Why are all addiction counseling useful? (100 words at least.) 2. Why is National institute...
1.
Why are all addiction counseling useful? (100 words at least.)
2. Why is National institute on drug Abuse is an effective
assessment for counseling? (100 words at least)
A presidential candidate's aide estimates that, among all college students, the proportion p who intend to...
A presidential candidate's aide estimates that, among
all college students, the proportion p who intend to vote in the
upcoming election is at least 60%. If 118 out of a random sample of
225 college students expressed an intent to vote, can we reject the
aide's estimate at the 0.05 level of significance?
Perform a one-tailed test. Then fill in the table
below.
Carry your intermediate computations to at least three
decimal places and round your answers as specified in...
A presidential candidate's aide estimates that, among all college students, the proportion p who intend to...
A presidential candidate's aide estimates that, among all
college students, the proportion p who intend to vote in the
upcoming election is at least 70%. If 158 out of a random sample of
235 college students expressed an intent to vote, can we reject the
aide's estimate at the 0.1 level of significance?Perform a
one-tailed test. Then fill in the table below.Carry your
intermediate computations to at least three decimal places and
round your answers as specified in the table....
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