Answer: 95% of all people work between 7 hours and 9 hours per day and It is true.
Step-by-step explanation:
Since we have given that
Mean = 8 hours
Standard deviation = 0.5 hours
According to Empirical Rule,
at 95% confidence, it lies within 2 standard deviations from the mean
so, lower value is given by
upper value is given by
Hence, 95% of all people work between 7 hours and 9 hours per day.
Therefore , it is true.
Answer:
12-inch by 16-inch- it's the largest available and can be reduced to scale for smaller photos.
Step-by-step explanation:
-Given the dimensions 7-inch by 9-inch, 8-inch by 10-inch, and 12-inch by 16-inch:
#If Alice buys 7-inch by 9-inch and the photo turn's out to be a 8-inch by 10-inch or 12-inch by 16-inch then part of her photo will be cut off.
Hence, Don't buy.
#If Alice buys 8-inch by 10-inch and the photo turn's out to be a 12-inch by 16-inch then part of her photo will be cut off. However, if the photo is a 7-inch by 9-inch then it will fit.
Hence, don't buy.
#If Alice buys a 12-inch by 16-inch and the photo turns out to be smaller than expected the she can always print it out and trim or reduce the to scale excessive print paper to the desire dimensions.
Hence, buy the 12-inch by 16-inch since it's the largest available and can be reduced to scale for smaller photos.
Step-by-step explanation:
