BUSI 230 FINAL EXAM QUESTIONS WITH CORRECT ANSWERS LATEST UPDATE 2026
Sample - Answers Determine the data: "The age of every fourth person entering a grocery store"
Nominal - Answers Identify: list of classes you are taking this semester.
Cluster - Answers what sample technique is used? at community college students are grouped
according to major. All Busi majors will be used and also all nursing in the sample.
Systematic - Answers What sample technique is used? Every fifth person boarding a person is
searched thoroughly.
Needs to be a decimal and not negative - Answers Why is -52 not a probability.
discrete distribution - Answers is the binomial distribution considered a discrete distribution or a
continuous distribution
Continuous distribution - Answers Is the normal distribution a discrete distribution or a continuous
distribution
positive - Answers If the area to the right of a z score is .23 then we know the z score is...
True - Answers (T or F) According to the central limit theorem, if the population is not normally
distributed, then you can guarantee a normally distrusted sampling distribution if you choose sample
size of 30 or greater
t distribution - Answers In a random sample of 15 families, the average weekly food expense was
$95.60 with standard deviation of $22.50. Assume the weekly distribution of food expenses is
normally distributed. Determine whether a normal distribution or a t distribution should be used.
There is not enough evidence to reject the claim - Answers A school administer claims that the mean
score on a standardized math test for the 7th grade is at least 80. if a hypothesis test is preformed,
how should you interpret a decision that fails to reject the null hypothesis.
fail to reject the null hypothesis - Answers the P value for a hypothesis test is P = .033 Do you reject or
fail to reject Ho when the level of significance is a = 0.01
reject the null hypothesis - Answers If the critical z score in a right tailed hypothesis test is 1.96, what
decision would you make if the standardized test stat is 2.99
independent - Answers classify the two given samples as independent or dependent
1. social interaction survey results from a group of 35 randomly chosen college students live in the
dorm on campus
2. social interaction survey results from a group of 40 randomly chosen college students that are
commuter students and live off campus
Fail to reject the null hypothesis - Answers A trucking firm suspects that the mean lifetime of a certain
tire it uses is less than 30,000 miles. To check the claim, the firm randomly selects and tests 54 of
these tires and gets a mean lifetime of 29,650 miles w a population SD of 1900 miles. The
standardized test stat is -1.35 at a = .05, test the trucking firm's claim.
There is sufficient evidence to reject the claim - Answers A local government official claims the mean
age of bus drivers in Chicago is 48.7 years. If the hypothesis test is preformed, how should you
interpret a decision that rejects the null hypothesis.
fail to reject the null hypothesis - Answers If the critical z score in a two tailed hypothesis test is -1.645
and 1.645, what decision would you make if the standardized test stat is -1.25
Sample - Answers Determine the data: "The age of every fourth person entering a grocery store"
Nominal - Answers Identify: list of classes you are taking this semester.
Cluster - Answers what sample technique is used? at community college students are grouped
according to major. All Busi majors will be used and also all nursing in the sample.
Systematic - Answers What sample technique is used? Every fifth person boarding a person is
searched thoroughly.
Needs to be a decimal and not negative - Answers Why is -52 not a probability.
discrete distribution - Answers is the binomial distribution considered a discrete distribution or a
continuous distribution
Continuous distribution - Answers Is the normal distribution a discrete distribution or a continuous
distribution
positive - Answers If the area to the right of a z score is .23 then we know the z score is...
True - Answers (T or F) According to the central limit theorem, if the population is not normally
distributed, then you can guarantee a normally distrusted sampling distribution if you choose sample
size of 30 or greater
t distribution - Answers In a random sample of 15 families, the average weekly food expense was
$95.60 with standard deviation of $22.50. Assume the weekly distribution of food expenses is
normally distributed. Determine whether a normal distribution or a t distribution should be used.
There is not enough evidence to reject the claim - Answers A school administer claims that the mean
score on a standardized math test for the 7th grade is at least 80. if a hypothesis test is preformed,
how should you interpret a decision that fails to reject the null hypothesis.
fail to reject the null hypothesis - Answers the P value for a hypothesis test is P = .033 Do you reject or
fail to reject Ho when the level of significance is a = 0.01
reject the null hypothesis - Answers If the critical z score in a right tailed hypothesis test is 1.96, what
decision would you make if the standardized test stat is 2.99
independent - Answers classify the two given samples as independent or dependent
1. social interaction survey results from a group of 35 randomly chosen college students live in the
dorm on campus
2. social interaction survey results from a group of 40 randomly chosen college students that are
commuter students and live off campus
Fail to reject the null hypothesis - Answers A trucking firm suspects that the mean lifetime of a certain
tire it uses is less than 30,000 miles. To check the claim, the firm randomly selects and tests 54 of
these tires and gets a mean lifetime of 29,650 miles w a population SD of 1900 miles. The
standardized test stat is -1.35 at a = .05, test the trucking firm's claim.
There is sufficient evidence to reject the claim - Answers A local government official claims the mean
age of bus drivers in Chicago is 48.7 years. If the hypothesis test is preformed, how should you
interpret a decision that rejects the null hypothesis.
fail to reject the null hypothesis - Answers If the critical z score in a two tailed hypothesis test is -1.645
and 1.645, what decision would you make if the standardized test stat is -1.25
