Agroup of diners were asked how much they would pay for a meal. their responses were: $7.50, $8.25, $9.00, $8.00, $7.25, $7.50, $8.00, $7.00.

a. find the mean
b. find the median
c. write the 5-number summary for this data
d. find the standard deviation of this data

Step-by-step explanation:

a.) Mean =

b.) Median =

c.) Minimum: 7.00

Quartile Q1: 7.375

Median: 7.75

Quartile Q3: 8.125

Maximum: 9.00

d.) Standard deviation σ=0.596212000886

the inequality is:

250c+180g≥950

step-by-step explanation:

let c denotes the number of days in a week   miyoko worked as a cryptographer.

and g denotes the number of days in a week she works as a geologist.

now we are given that she earns $250 for every day she works as a cryptographer,and earns $180 for every day she works as a geologist.

now miyoko's goal is to earn more than $950 this week.

hence, the inequality could be represented as:

250c+180g≥950

answer is x<