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1 year ago

INDEPENDENT PRACTICE

Mathematics

1 answer:

nydimaria [60]1 year ago

8 0

1. False
2. True
3. True
4. True
5. False

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A statistics professor drew a random sample of 81 observations and found that x with bar on top equals 62 s equals 15. Estimate

ratelena [41]

Answer:

LCL = 59.26 to two decimal places

Step-by-step explanation:

Here, we want to estimate the LCL of the population mean with 90% confidence

We proceed as follows;

Given alpha = 0.1, then Z(0.05)=1.645 (from standard normal table), s = 15

Mathematically;

LCL =x_bar -Z*s/√( n)= 62 - (1.645 * 15)/√81

LCL = 62- (24.675)/9 = 59.2583

LCL = 59.26 to two decimal places

3 0

2 years ago

A merchant is bagging potatoes that he will sell for 5$ a bag. He wants to take in at least 400$ for them. How many bags should

Kitty [74]

400 divided by 5 = 80.

Needs to bag at least 80.

7 0

2 years ago

Cost To Store : $110 Markup : 140%

eimsori [14]

If you are talking about $110 being increased by 140% then the answer is $264

5 0

2 years ago

Which of the following describes the function x^4-3?

tiny-mole [99]

Answer:

what are the following?

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers

10. Plot and connect the points to form a rectangle. Then find the length, width, and area of the rectangle.

stellarik [79]

The length of the rectangle is 4

The width of the rectangle is 3.

The area of the rectangle is 12 square units.

Explanation:

Given that the coordinates of the rectangle are A(3,0), B(0,0), C(0,4), D(3,4)

We need to determine the length, width and area of the rectangle.

Length:

After plotting the coordinates in the graph, it is obvious that the length of the rectangle is 4.

Width:

After plotting the coordinates in the graph, it is obvious that the width of the rectangle is 3.

Area of the rectangle:

The formula to determine the area of the rectangle is given by

$Area=length \times width$

Substituting the values, we have,

$Area=4\times 3=12$

Thus, the area of the rectangle is 12 square units.

4 0

3 years ago