In order to prepare for the test, janet purchases an activity tracker to record her steps. her goal is to walk 10,000 steps each day. she measures her average step length to be 30 inches. when janet runs, her average step length increases to 36 inches. how many steps would she have to take to run 1 mile (5,280 feet)? round to the nearest step.

Arestaurant gives out a scratch-off card to every customer. the probability that a customer will win a prize from a scratch-off card is 25%. design and conduct a simulation using random numbers to find the experimental probability that a customer will need more than 3 cards in order to win a prize. justify the model for your simulation, and conduct at least 10 trials.

The function show two sisters' savings account and the rate at which they plan to deposit money

Astudy was interested in determining if eating milk chocolate lowered someone's cholesterol levels.ten people's cholesterol was measured. then, each of these individuals were told to eat 100g of milk chocolate every day and to eat as they normally did. after two weeks, their cholesterol levels were measured again. is there evidence to support that their cholesterol levels went down? how should we write the alternative hypothesis? (mud = the population mean difference= before - after)a. ha: mud = 0b. ha: mud > 0c. ha: mud < 0d. ha: mud does not equal 0