The number of boys a family can expect to have if they have 9 children.
What is 4.5
100
Find z≤ 2.13
.9834
100
The probability of randomly selecting a member of a normally distributed population with a value less than the mean of the population.
What is .5
100
According to to HGTV, 70% of all household have 2 bathroom or less. There are 20 houses. What is the expected value?
14
100
Draw a graph of a strong negative correlation.
many possible options
200
The number of games the Pistons can expect to win out of their next 16 if they've won 46 out of the last 73 games.
What is 10
200
Find z ≥ -.94
1- .1736= .8264
200
US men in the age group of 20-29 have heights that are normally distributed with a mean of 69.6 inches and a standard deviation of 3.0 inches. This is the probability of randomly selecting a man in this age group whose height is more than 72 inches.
What is .21
200
According to to HGTV, 70% of all household have 2 bathroom or less. There are 20 houses.
What is the standard deviation?
2.05
200
If r= 0, what does that mean?
No correlation between the variables
300
Your expected earnings if you pay $1 to play a game where you roll a die and win $5 if you roll a 6 and nothing if you roll any other number.
What is -.17
300
Find -2.10 ≤ z ≤ 1.76
.9608 - .0179= .9429
300
US men in the age group of 20-29 have heights that are normally distributed with a mean of 69.6 inches and a standard deviation of 3.0 inches. This is the probability of randomly selecting a man in this age group whose height is between 66 and 72 inches.
What is .67
300
According to to HGTV, 70% of all household have 2 bathroom or less. There are 20 houses.
What is the probability 15 or more houses have 2 or less bathrooms?
.179 + .130 + .072 + .028 + .007 + .001= .417
300
x 10 20 30 40 50
y 7 11 16 23 38
Find ∑x and find ∑ y
∑ x= 150
∑ y = 95
400
The expected value for rolling a fair 10-sided die.
What is 5.5
400
The area under the standard normal curve that is to the left of a z-score of 2.
What is .84
400
The weights of adult male beagles are normally distributed, with a mean of 25 pounds and a standard deviation of 3 pounds. This is the probability of randomly selected an adult male beagle whose weight is less than 23 pounds.
What is .25
400
According to to HGTV, 70% of all household have 2 bathroom or less. There are 20 houses.
What is the probability 7 or less homes have 2 or less bathrooms?
Your expected earnings if you buy 1 raffle ticket for $2. 620 are sold and 1 ticket is picked for a prize of $300, 1 ticket is picked for a prize of $200, and 1 ticket is picked for a prize of $100.
What is -1.03
500
The area under the standard normal curve between the z-scores of -2 and 1.
What is .815
500
The weights of adult male beagles are normally distributed, with a mean of 25 pounds and a standard deviation of 3 pounds. This is the probability of randomly selected an adult male beagle whose weight is less than 22 pounds or greater than 28 pounds.
What is .32
500
The z-score that corresponds to the cumulative area on the left of 0.3520.
What is -.38
500
x 10 20 30 40 50
y 7 11 16 23 38
Find an equation and then determine y if x = 70