A researcher is interested in estimating the average number of times that shoppers have used the buy-online-pickup-in-store (BOPIS) service in the past 3 months. The following standards have been set by her manager: a confidence level of 95% and an error within 0.5 of a time. Suppose she had no information about the population standard deviation for the variable, but knows that the range for the variable is about 30 times. What is the most appropriate sample size

l.jnl.j/n.m,lm,

step-by-step explanation:

- "runner b is moving at a slower rate."

- "the graphs shown are graphs of distance(km) against time(min).

the slopes of this graphs are are given by:

slope = (change in y)/(change in x)

= (change in distance)/(change in time)

this is the formula for finding the speed. so, the slope of these graphs represent the speed of the runner.

taking each division in the graph to represent 1 on both axis:

runner a ⇒ speed = (2-0)/(1-0)

= 2/1

= 2 km/min

runner b ⇒ speed = (3-0)/(3-0)

= 3/3

= 1 km/min

this shows that   runner b is moving at a slower rate."

it is 10.6 according to my calculations

no because mercury has a density of 13.6 grams per centimeter squared while gold has 19.32 grams centimeter squared

step-by-step explanation: