Charlie is filling out a job application, and he needs to give the hourly wage of his last job as a manicurist. at that job, he earned $17 for each manicure he gave, he worked four days a week for 8.5 hours each day, and he gave 22 manicures a week on average. which of the following best describes the type of pay charlie received — piece rate, hourly wage, or annual salary?

Since he is paid per manicure, it is piece rate

Step-by-step explanation:

answer:
Hence, the probability that seven or more of them used their phones for guidance on purchasing decisions is 0.7887              
Step-by-step explanation:
We are given the following information in the question:
We treat people using phones in the store for guidance  as a success.
P(People use phone for guidance) = 57% = 0.57
Then the number of people follows a binomial distribution, where
Formula:

where n is the total number of observations, x is the number of success, p is the probability of success.
Now, we are given n = 14 and x = 7
We have to evaluate:

Hence, the probability that seven or more of them used their phones for guidance on purchasing decisions is 0.7887