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Elden [556K]
3 years ago
9

Some stores print multiple coupons and advertisements on their receipts, making the receipts unusually long. A curious shopper m

akes the same purchase at a random sample of 10 stores and measures the length of each receipt (in inches). Here are the results:
8.25, 7.5, 5, 9.5, 12, 5.5, 9, 14, 11.5, 18

What is the value of the standard error of the mean?
1.256
1.324
4.992
5.262
Mathematics
1 answer:
LiRa [457]3 years ago
7 0

Answer:

Option A

Step-by-step explanation:

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a restaurant holds an anniversary celebration of 90 diners. Only 27 are offered free dessert, what is the percent of dinners not
alex41 [277]

Answer:

70%

Step-by-step explanation:

(90-27)/90

=63/90

=0.7

Changing it to percentage:

=70%

6 0
4 years ago
What is -12/11 = -3/?
solniwko [45]

Answer:

According to my calculations, the missing number is 11/4

Step-by-step explanation:

7 0
3 years ago
I need help please ASAP thank you
kirza4 [7]

Answer:

The products of AB and BA is given by

AB=\left[\begin{array}{cc}21&-6\\ 9&3\end{array}\right]

BA=\left[\begin{array}{cc}9&-1\\-18&15\end{array}\right]

Step-by-step explanation:

Given the matrices A=\left[\begin{array}{cc}6&-5\\-3&-4\end{array}\right] and

B=\left[\begin{array}{cc}1&-1\\-3&0\end{array}\right]

To find the product AB and BA

AB=\left[\begin{array}{cc}6&-5\\-3&-4\end{array}\right] \left[\begin{array}{cc}1 & -1\\-3 &0\end{array}\right]

=\left[\begin{array}{cc}6+15& -6+0\\-3+12&3-0\end{array}\right]

Therefore the product of AB is

AB=\left[\begin{array}{cc}21&-6\\ 9&3\end{array}\right]

BA=\left[\begin{array}{cc}1&-1\\-3&0\end{array}\right] \left[\begin{array}{cc}6&-5\\-3&-4\end{array}\right]

=\left[\begin{array}{cc}6+3& -5+4\\-18+0&15+0\end{array}\right]

Therefore the product of BA is

BA=\left[\begin{array}{cc}9&-1\\-18&15\end{array}\right]

The products of AB and BA is given by

AB=\left[\begin{array}{cc}21&-6\\ 9&3\end{array}\right]

BA=\left[\begin{array}{cc}9&-1\\-18&15\end{array}\right]

6 0
3 years ago
A rectangle is measured by 2 1/3 inches and 2 1/3 inches what is the area
horrorfan [7]

Answer:

5.44444442889 or 5 \frac{4}{9}

Step-by-step explanation:

Just multiply the 2 numbers together

8 0
3 years ago
Read 2 more answers
Help me please this is due today help me
erastovalidia [21]

Answer:

Below

Step-by-step explanation:

1. -4, -|2|, -1, |-3|, 4

2. -7.5, -7.2, 9.5, 10.5

3. 7

5. 13

6. -9

7. \frac{5}{12}

8. -1.36

9. \frac{13}{5}*\frac{-4}{3}=\frac{-52}{15}

10. -27.2

11. 22 * 2 + 7 * 0 - 5 * 1 = 39

7 0
3 years ago
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