Mathematics, 02.09.2021 19:10, EmilySerna
To increase sales, a cell phone store began giving a free month of service on some cell plan purchases. Customers were unaware whether they would receive the free month until after purchase. The store manager claimed that one in eight customers received the free month. Nine customers each buy a cell phone plan. Let X = the number of customers that receive a free month of cell phone service.
Part A: Is X a binomial random variable? Explain.
Part B: What is the mean and standard deviation of X? Provide an interpretation for each value in context.
Part C: Three of the nine customers receive a free month of service. Is the store's claim accurate? Compute P(X ≥ 3) and use the result to justify your answer.
Answers: 1
Mathematics, 21.06.2019 18:00, julliette27
What power can you write to represent the volume of the cube shown? write the power as an expression with a base and an exponent and then find the volume of the cube
Answers: 3
Mathematics, 21.06.2019 18:00, ineedhelp2285
Yesterday i ran 5 miles. today, i ran 3.7 miles. did my percent increase, decrease or is it a percent error? plz i need
Answers: 2
Mathematics, 21.06.2019 19:50, dalejacksoniip5yf4y
Which of the following describes the graph of y--4x-36 compared to the parent square root function? stretched by a factor of 2, reflected over the x-axis, and translated 9 units right stretched by a factor of 2, reflected over the x-axis, and translated 9 units left stretched by a factor of 2, reflected over the y-axis, and translated 9 units right stretched by a factor of 2, reflected over the y-axis, and translated 9 units left save and exit next submit
Answers: 1
To increase sales, a cell phone store began giving a free month of service on some cell plan purchas...