Stats, what's that?
How would you describe them?
Chances are...
Shh, be Discrete
Act Normal
How confident are you?
100
Determine whether the data set is a population or a sample.
The number of guests on one floor of a 7 story hotel.
What is sample?
100
For the dataset provide, determine the mean, median, and mode.
56 63 51 60 57 60 60 54 63 59 80 63 60 62 65
What is...
mean = 60.9
median = 60
mode = 60
100
Decide if the situation involves permutations, combinations, or neither.
The number of ways a four-member committee can be chosen from 10 people.
What is combinations?
100
Find the indicated probability using the geometric distribution, the Poisson distribution, or the binomial distribution.
The probability that you will make a sale on any given telephone call is 0.19. Find the probability that you make your first sale on the second call.
What is 0.154?
100
For the standard normal curve, find the z-score that corresponds to the 69th percentile.
What is z = 0.497?
100
In a survey of 73,901 college graduates, 23,991 obtained a postgraduate degree. Construct a 90% confidence interval for p.
What is (0.322, 0.327)?
200
Determine whether the data are qualitative or quantitative.
The student ID numbers of a sample of 200 students at a MXC.
What is qualitative?
200
The mean scores for students in an biology course (by program) are shown below. What is the mean score for the class?
10 nursing students: 88
5 EMT students: 90
12 physical therapy students: 81
What is bar x =85.26 ?
200
A restaurant offers a $15 dinner special that lets you choose from 6 appetizers, 12 entrées, and 8 desserts. How many different meals are available when you select an appetizer, an entrée, and a dessert?
What is 576 different meals?
200
Find the indicated probability using the geometric distribution, the Poisson distribution, or the binomial distribution.
Sixty percent of U.S. adults favor establishing policies to reduce the use of fossil fuels. You randomly select eight U.S. adults. Find the probability that the number who favor establishing policies to reduce the use of fossil fuels is less than five.
What is p=0.405?
200
In a recent study involving 54 women, the mean body temperature of the women was found to be 97.2°F, with a standard deviation of 0.83. Random samples of size 36 are drawn from this population, and the mean of each sample is determined. Find the mean and standard error of the mean. (Adapted from PLOS One)
What is mu_(barx) = 97.2, sigma_barx = 0.138 ?
200
In a random sample of eight cell phones, the mean full retail price was $526.50 and the standard deviation was $184.00. Construct a 95% confidence interval for the population mean.
What is (372.67, 680.33)?
300
Name the level of measurement of the dataset.
The total compensations (in millions of dollars) of the ten highest-paid CEOs at U.S. public companies are listed. (Source: 24/7 Wall St.)
280.6 66.9 42.9 36.5 34.3 31.6 31.6 28.8 26.4 25.8
What is ratio?
300
Based on the frquency distribution shown for average normal temperatures ( F^@ ) in Toledo, OH, find the relative frequency for the class from 65-72.
What is 0.186?
300
A physics class has 40 students. Of these, 12 students are physics majors and 16 students are minoring in math. Of the physics majors, three are minoring in math. Find the probability that a randomly selected student is minoring in math or a physics major.
What is P(Math or Physics) = 0.625?
300
Find the indicated probability using the geometric distribution, the Poisson distribution, or the binomial distribution.
In Akron, Ohio, the mean number of days in April with 0.01 inch or more of precipitation is 14. Find the probability that the number of days in April with 0.01 inch or more of precipitation in Akron is exactly 17 days.
What is p=0.071?
300
The annual salaries for entry-level marketing analysts in Pennsylvania are normally distributed, with a mean of about $72,000 and a standard deviation of about $25,000. Random samples of size 38 are drawn from this population, and the mean of each sample is determined. Find the mean and standard error of the mean.
What is mu_barx = $72,000 , sigma_barx = $4055.54 ?
300
You're interested in collecting data to find average driving distances (in miles) to work of a certain population of people. Assume the population standard deviation is 8 miles. Determine the minimum sample size required to be 99% confident that the sample mean driving distance to work is within 2 miles of the population mean driving distance to work.
What is n = 107 people?