Time spent usingâ e-mail per session is normallyâ distributed, with mu equals 10î¼=10 minutes and sigma equals 3ï=3 minutes. assume that the time spent per session is normally distributed. complete partsâ (a) throughâ (d). a. if you select a random sample of 5050 âsessions, what is the probability that the sample mean is between 9.89.8 and 10.210.2 âminutes?

Muscles, a membership-only gym is hoping to open a new branch in a small city in pennsylvania that currently has no fitness centers. according to their research approximately 12,600 residents live within driving distance of the gym. muscles sends out surveys to a sample of 300 randomly selected residents in this area (all of who respond) and finds that 40 residents say they would visit a gym if one was located in their area. based on the past survey research, muscles estimates that approximately 30% of these respondents would actually join the gym if they opened one in the area. based on this information and the results of the sample survey, about how many residents should muscles expect to join its new branch? a) 134 b) 504 c) 1,680 d) 3,780

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

Explain how you do each step what term makes it inconsistent y=2x - 4 ?