JD is China's largest online retail store. In an effort to design proper promotion strategies for their loyal customers, they randomly selected 100 loyal customers and considered the total purchase amount spent last year by each customer. They also know the annual income of each sampled customer. The data file is available here Download here. In order to offer 10% discount to the loyal customers as their long-run promotion strategy, their business analyst would like to examine whether the average ratio of spent/salary is less than 1.8%. (hint: Define a new column Ratio: Spent/Salary in your data) (i) Set up appropriate hypotheses that the analyst would use. (ii) What is the test-statistic and its value (in three decimal places)? (iii)What is the p-value? (in two decimal places) (iv) What do you think the analyst would conclude with 99% confidence?

hello there,

to convert kg to pounds and ounces you set up

turn the kg into

8.3/x = 1/2.2

x = 18.26

now convert the pounds into

18.26/x = 1/16

x = 292.16

now that is the answer in ounces.

answer: 18.26 lb; 292.16 oz

hope i

-char

b) yes

step-by-step explanation:

let the statements be named as,

statement 1: if the power has been cut, then the refrigerator does not work.

statement 2: the refrigerator does not work.

conclusion: the power has been cut

now, 'law of detachment states that if we have the statements given as,

1. if p, then q.

2. p

then, we get the true statement or conclusion as q'.

thus, on comparing, we get that,

p: if the power has been cut.

q: the refrigerator does not work.

so, the argument is true by the law of detachment.

sorry for any inconvenience this may have caused try again

try again.

it is called area method in which we draw a smooth oval shape enclosing most of the data points in scatter plots excluding the outlines. it is used to construct best fit line through the data