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spayn [35]
3 years ago
7

A marketing research company is estimating the average total compensation of CEOs in the service industry. Data were randomly co

llected from 18 CEOs and the 99 % confidence interval for the mean was calculated to be Explain what the phrase " 99 % confident" means.
Mathematics
1 answer:
daser333 [38]3 years ago
8 0

Answer:

Step-by-step explanation:

Confidence interval measures the degree of uncertainty and certainty and comprises a range of values that might contain an unknown population parameter. A 99% confidence interval means we can expect that 99% of the 18 samples taken contains the parameter mean values between the upper and the lower bound values from the data collected from the 18 CEOs.

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Evaluate the expression when m = 63 and n = 45
sesenic [268]

The value of the given expression (3m - n)² + 4m when m = 63 and n = 45 is equal to 20,916.

<h3>What is an expression?</h3>

An expression can be defined as a mathematical equation which is used to show the relationship existing between two or more variables and numerical quantities.

<u>Given the following variables:</u>

  • m = 63.
  • n = 45.

Substituting the given variables into the given expression, we have;

Expression = (3m - n)² + 4m.

Expression = (3(63) - 45)² + 4(45).

Expression = (189 - 45)² + 180

Expression = 144² + 180

Expression = 20,736 + 180

Expression = 20,916.

Read more on expressions here: brainly.com/question/28260012

#SPJ1

Complete Question:

Evaluate the expression when m = 63 and n = 45. (3m - n)² + 4m.

8 0
1 year ago
If the length of two sides of a triangle are 7 and 10 the length of the third side may be
Sonja [21]

Answer:

D. 4

Step-by-step explanation:

Let's look at all the options first. All of the options are below 7 and 10, hence we can deduce that it is not the hypotenuse. Looking at 7 and 10, we see that 10 is the larger number, and hence we know that 10 is the hypotenuse.

Hence, as the other two sides added up in a triangle must be larger than the hypotenuse, the only available option is 4, since 4 + 7 = 11 > 10.

Hope this helped!

6 0
3 years ago
Amilia walk 35 mile. She was so tired that she take a brake for 1 minutes. Then she started to walk 15 mile away from her house.
suter [353]

Answer:

50 miles

Step-by-step explanation:

35 + 15

8 0
3 years ago
What is the mean of the values in the stem-and-leaf plot?<br><br> Key: 2|5 means 25
zmey [24]
A plot where each data is split into a leaf usaully the last digit.
4 0
3 years ago
In the graph above, which vertical line (V) and horizontal line (H) can be used to graph point A?
gavmur [86]

Answer:

V: x = 1; H: y = 4

Step-by-step explanation:

Point A is at x = 1 and y = 4

A vertical line at x=1 and a horizontal line at y = 4

4 0
3 years ago
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