Bit Chapter 4

It is possible to have a standard deviation of 450,000

True; the standard deviation can be any value greater than or equal to zero

The number of hours per week that the television is turned on is determined for each family in a sample. The mean of the data is 3737 hours and the median is 33.233.2 hours. Twenty-four of the families in the sample turned on the television for 2222 hours or less for the week. The 5th percentile of the data is 2222 hours. Step 1 of 5 : Based on the given information, determine if the following statement is true or false. The 57th percentile is less than 3232 hours.

False

Clara is looking into investing a portion of her recent bonus into the stock market. While researching different companies, she discovers the following standard deviations of one year of daily stock closing prices. Perfect Plungers Plus: Standard deviation of stock prices =$9.85=$⁢9.85 Garden Statues Express: Standard deviation of stock prices =$1.07=$⁢1.07 Based on the data and assuming these trends continue, which company would give Clara a stable long-term investment?

Garden statues express; the smaller deviation indicated that garden statues express has less variability in its closing prices than perfect plungers plus

A manufacturer makes bags of popcorn and bags of potato chips. The average weight of a bag of popcorn is supposed to be 3.023.02 ounces with an allowable deviation of 0.040.04 ounces. The average weight of a bag of potato chips is supposed to be 5.045.04 ounces with an allowable deviation of 0.020.02 ounces. A factory worker randomly selects a bag of popcorn from the assembly line and it has a weight of 3.043.04 ounces. Then the worker randomly selects a bag of potato chips from the assembly line and it has a weight of 5.075.07 ounces. Which description closely matches the findings on the assembly line?

The popcorn bag assembly line is closer to the specifications given because its z-score is closer to the standard than the potato chip bag assembly line

For the following type of data set, would you be more interested in looking at the mean, median, or mode? State your reasoning. The salary of first-year teachers at a local elementary school

mean, no outliers

For the following type of data set, would you be more interested in looking at the mean, median, or mode? State your reasoning. The price for homes with similar floor plans in a new neighborhood

mean, the prices for homes are quantitative data with no outliers

For the following type of data set, would you be more interested in looking at the mean, median, or mode? State your reasoning. The price of similar sofas at different furniture stores

mean, the prices for homes are quantitative data with no outliers

For the following type of data set, would you be more interested in looking at the mean, median, or mode? State your reasoning. The salary of actors on TV

median, the salaries of actors are quantitative data with outliers

For the following type of data set, would you be more interested in looking at the mean, median, or mode? State your reasoning. The salary of players on a professional baseball team

median, the salaries of actors are quantitative data with outliers

For the following type of data set, would you be more interested in looking at the mean, median, or mode? State your reasoning. The rating of professors on a scale from 1 to 5 (with 1 being the worst and 5 being the best)

mode, the ratings of professors are qualitative data

A/An is useful in comparing data values from populations with different means and standard deviations.

z score