<h3>
Answer:</h3>
<h3>C. In x = -7 </h3>
<h3>
Step-by-step explanation:</h3>
<h3>13 + Inx = 6</h3>
<h3>1. Subtract 13 from both sides</h3>
13 + Inx - 13 = 6 -13
<h3>2. Simplify </h3>
= In x = -7
<h3>Solution : </h3>
<h3>= In x = -7</h3>
1-4, 5, 8, 9, 12, 13, 15, 18, 21, 22, 27, 31, 34, 37, 46, 48, 51, 71, 74, 83 look at this chart you will find the answer easy
The standard deviation of the sample mean differences is 4.854
<h3>How to determine the standard deviation of the sample mean differences?</h3>
The table of values is given as:
<u>Sample Standard deviation</u>
Red box 3.868
Blue box 2.933
The standard deviation of the sample mean differences is calculated using:

This gives

Evaluate the expression

Also, the table of value do not give any information regarding the sample size.
This means that the sample size of the session regarding the number of people would purchase the red box and the blue box are unknown
Hence, the standard deviation of the sample mean differences is 4.854
Read more about standard deviation at:
brainly.com/question/15858152
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Answer:
2 1/10 and 21/10
Step-by-step explanation:
2.1 is 2 + 0.1 when expanded.
2 is just 2 and then 0.1 as a fraction is 1/10. The mixed number would be 2 1/10.
The improper fraction is just 21/10 (convert the mixed number into improper form).
Converting from mixed number to improper: <u>Multiply the number in the front (in this case 2) by the denominator. </u>
<u />
<u>That is 2 x 10 which is 20. Then add that number (20) to the numerator. 20 + 1 is equal to 21. </u>
<u />
<u>21 would be our numerator and the denominator would stay the same (10). </u>
21/10 is the improper form.
The answer is B. Would you like an explanation why?