Probability
A car comes in 3 different body styles and 5 different colors. How many possible options are there?
What is 15
Which type of study would make the most sense if the superintendent wants to determine which meal choice students prefer the most; an experiment, an observational study, or a survey?
What is a survey
For a scatterplot with an upward trend from left to right the direction is called...
What is positive
Dog weights at a local vet have a mean of 45 pounds and a standard deviation of 5 pounds. Estimate the percentage of dogs between 40 and 50 pounds?
What is .6826 or 68.3% or roughly 68%
Given a normal distribution with a mean of 70 and a standard deviation of 4.5, what is the probability a value is between 60 and 85?
What is 0.9864 or 98.6%
The probability it will rain any given day is .21. What is the probability it will not rain any given day?
What is .79
A survey was given to a randomly selected sample of 500 students at Brockton High School to determine which television shows are preferred by high school aged teenagers. What is the population in this study?
What is high school aged teenagers
A correlation value of -0.78 is considered strong, weak, or moderate?
What is strong
Heights of high school male seniors are normally distributed with a mean of 67 inches and a standard deviation of 3 inches. Estimate the percentage of male high school seniors between 67 and 73 inches?
What is .0.4772 or 47.7% or roughly 47.5%
What is the probability of picking two vowels in a row from the word "alphabet" if the letters are selected at random and not replaced.
What is 3/28 or 0.107 or 10.7%
What is the probability of picking two vowels in a row from the word "break" if the letters are selected at random and not replaced.
What is 1/10 or 0.1 or 10%
In an experiment to determine whether taking an aspirin every day lowers the risk of having a heart attack, 700 people in one group take an aspirin and the other group of 700 people take a pill with inactive ingredients. The group that does not take the aspirin is called...
What is the control group
When finding the relative frequency in a two-way table, you are looking for the percentage of the total. When you are looking for the row relative frequency, you are looking for the percentage of the ______ total.
What is row
The class average on a test was 78 with a standard deviation of 12 points. What is probability a student got 70% or less?
What is 0.2514 or 25.1%
Which is more likely to occur, rolling two normal dice and getting a sum of seven or rolling a four-equal-sided pyramid numbered from 1 to 4 and getting a 2?
What is rolling the pyramid and getting a two
(25% probability where rolling two die with a sum of 7 is 16.7% probability)
A spinner with the numbers 1 through 8 is spun and a normal die is rolled. What is the probability of spinning an even number greater than 2 on the spinner and an odd number greater than 2 on the die?
What is 3/20 or 0.15
An error that results in misrepresentation of members of a population.
What is bias
A correlation value of 0.32 is considered strong, weak or moderate?
What is weak
An average female is 5'4'' (64 inches). The standard deviation for average female heights is 2.5 inches. Madee is 5'6". What percentage of women are taller than her?
What is 0.2119 or 21.2%
If I am rolling two fair dice, what is the probability that the sum of the two dice is 6?
What is 5/36 or 0.139
A pill that looks and tastes like the real medication but contains no active ingredients.
What is a placebo
A math teacher made a test score scatterplot from all of his classes scores. The line of best fit for this scatterplot is defined by the equation y=28x + 2, where x is the number of hours studied and y is the test score. If Sammy studied for 3 hours, what is her predicted test score?
What is 86
Freshman GPAs at Dodgeland High School have a mean of 2.93 and standard deviation of .39. What is the probability a student has a GPA of between 2 and 3?
What is 0.5627 or 56.3%