A researcher found that a cigarette smoker smokes on average cigarettes a day. She feels that this average is too high. She selected a random sample of smokers and found that the mean number of cigarettes they smoked per day was . The sample standard deviation was . At , is there enough evidence to support her claim? Assume that the population is approximately normally distributed. Use the critical value method and tables.

Solve the following inequalities and show the solution on a number line. 3/4 (2x-7) ≤ 5

Acampus club held a bake sale as a fund raiser, selling coffee, muffins, and bacon and eggs sandwiches. the club members charged $1 for a cup of coffee, 3$ for a muffin , and $4 for a back. and egg sandwich. they sold a total of 55 items , easing $119. of the club members sold 5 more muffins than cups of coffee, how many bacon and egg sandwiches he’s did they sell

Arestaurant manager wanted to get a better understanding of the tips her employees earn, so she decided to record the number of patrons her restaurant receives over the course of a week, as well as how many of those patrons left tips of at least 15%. the data she collected is in the table below. day mon tue wed thu fri sat sun patrons 126 106 103 126 153 165 137 tippers 82 87 93 68 91 83 64 which day of the week has the lowest experimental probability of patrons tipping at least 15%? a. sunday b. saturday c. friday d. thursday