Statistics 68-95-99.7
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Ratios
more stats
other/weighted average
100
Assume the length of cat pregnancies are normally distributed with a mean of 65 days and a standard deviation of 2.5.
The z-score for a cat (named Delilah) who had a pregnancy lasting 68 days was ____.
What is 1.2 ?
100
In 2014, the price of a box of tissues was about $1.25. The cost of tissues in 2020 if it kept up with inflation would be__.
What is $1.37?
100
Find the value of x.
What is 793.1?
100
The 75 in the following data is considered an ______.
23,23,24,25,27,75
What is an outlier?
100
A students grade in an English course is comprised of:
Papers: 75%
Journals: 10%
Discussion: 15%
The grades Edgar received for each of the categories were: 80% on papers, 50% on Journals, and 95% on discussions.
What is Edgars overall grade?
What is 79.25%?
200
Assume the length of cat pregnancies are normally distributed with a mean of 65 days and a standard deviation of 2.5.
If a cat named Tiffany, has a pregnancy with a z-score of 1, and Georgiana had a pregnancy that lasted 60 days, which cat was pregnant for less time?
Who is Georgiana?
200
Choose the appropriate sentence below to represent the meaning of 44.6 in the chart below:
a. About 44.6% of the population is in North America
b. For every 100 people in Africa, there are about 45 people in North America.
c. For every 44.6 people in North America, there are 580 million people.
d. For every 44.6 people in North America, there are 224 people in Africa.
What is B?
200
The following data has a mean of ____ and a standard deviation of _____.
5 , 5 , 5 , 5 , 5
What is: mean of 5 and standard deviation of 0.
200
Below is a table that summarizes Jill's points per game during her high school career. What is her average points per game?
What is 6.13 ppg?
300
Assume the length of cat pregnancies are normally distributed with a mean of 65 days and a standard deviation of 2.5.
Use the 68,95,99.7 Rule to determine the following:
Between what days would we expect 95% of the cats to be born within.
What is between 60 and 70 days?
300
The ratio of Euros to US Dollars to Yen is: 3 to 4 to 500.
Which is worth more: 4000 Yen or 35 US Dollars?
What is 35 US Dollars?
300
The ratio of males to female chickens hatched is about 1.15 to 1. The US is one of the world's largest producers of poultry. If 8.5 billion chicks were born in the US, how many of them could we expect to be female?
What is about 3.95 billion?
300
The total number of infants that participated in the study.
What is 39?
400
Assume the length of cat pregnancies are normally distributed with a mean of 65 days and a standard deviation of 2.5.
Use the 68,95,99.7 Rule to determine the following:
What is the possibility that a cat will be pregnant for more than 72.5 days?
What is 0.15% ?
400
The formula that goes in cell B12?
What is =D5*B8/C5 ?
alternate answers ( =B8*D5/C5)400
The average house payment in Indiana was $1,130 per month. The average electric bill was $115 per month.
Compute the ratio of house payment to electric bill and scale the second number to 1.
Is this part to part or part to whole?
What is 9.83 to 1 ?
Part to Part
400
The mode of the data below.
What is 10?
500
The inflation rate between Jan 2020 and Jan 2021 was ___. (Round to 1 decimal)
What is 1.4% ?
500
The median of the following data set.
What is 9?