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Dima020 [189]
2 years ago
3

For u.s. adult males, the mean height is 178 cm with a standard deviation of 8 cm and the mean weight is 84 kg with a standard d

eviation of 8 kg. elmer is 170 cm tall and weighs 70 kg. it is most nearly correct to say that:
Mathematics
1 answer:
Contact [7]2 years ago
6 0
It is most nearly correct to say that Elmer's weight is more unusual than his height. His weight is almost two standard deviation from the mean while his height is only one standard deviation from the mean. The weight of Elmer must be one of the outliers in the data set as it is very from the mean of the whole data. The standard deviation of a data set measures the degree of how the data points are spread out from the mean or the average when plotted. Having a low value of this would mean that the values are close to the mean while having a high value of the standard deviation would indicate the the values are spread out.
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To gather information about the validity of a new standardized test for tenth-grade students in a particular state, a random sam
aleksklad [387]

Answer:

(c) A cluster sample

Step-by-step explanation:

A cluster sample occurs when the intended population is divided into   non- overlapping sub -groups or clusters and some of these clusters are represented in the sample.

From the question, In a state 15 high schools where randomly selected and  the standardized test was administered to only 10th grade student. Here, the  high schools  are the non-overlapping sub groups that is randomly selected and a reasonable representation of the  entire subgroups.

5 0
2 years ago
PLEASE HELP ME WITH PRE CAL!!
Oduvanchick [21]

Answer:

0.67 mi

Step-by-step explanation:

The diagram illustrating the question is shown in the attach photo.

In triangle DCA,

Opposite = H

Adjacent = b

Angel θ = 27°

Tan θ = Opp /Adj

Tan 27° = H/b

Cross multiply

H = b x Tan 27°... (1)

From triangle DSA,

The diagram illustrating the question is shown in attach photo.

In triangle DCA,

Opposite = H

Adjacent = 2.3 – b

Angel θ = 34°

Tan θ = Opp /Adj

Tan 34° = H/ 2.3 – b

Cross multiply

H = Tan 34° (2.3 – b) .. (2)

Equating equation (1) and (2)

b x Tan 27° = Tan 34° (2.3 – b)

0.5095b = 0.6745(2.3 – b)

0.5095b = 1.55135 – 0.6745b

Collect like terms

0.5095b + 0.6745b = 1.55135

1.184b = 1.55135

Divide both side by 1.184

b = 1.55135/1.184

b = 1.31 mi

Substitute the value of b into any of the equation to obtain the height (H). In this case we shall use equation 1.

H = b x Tan 27°

H = 1.31 x Tan 27°

H = 0.67 mi

Therefore, the height of the drone is 0.67 mi

4 0
2 years ago
Hazel covered a box with felt. The dimensions of the box are shown in the figure below:
maria [59]

<span>$36.36 because the area of the prism is 404sq. in. , 404x0.09 (for nine cents per sq. in.) = 36.36
</span>
Hope this helps!! :)
8 0
2 years ago
Vijay has an annual salary of 47,000, and his company pays him twice a month. What is the gross income in each paycheck that Vij
leonid [27]
Alright, so he has an <em>annual </em>salary of 47,000 dollars. Which means that he is paid 47,000 dollars in 12 months. You'll first have to calculate the pay Vijay receives <em>each month</em>, which is \frac{47,000}{12 months}, or about $3,916.67 (I'll round up to 3917 for simplicity). 

Now, he gets paid twice a month. So each paycheck is half of $3917. 3917 x (1/2) = $1958.50. 

So each paycheck should be $1958.50 (this is a rounded figure). 
6 0
2 years ago
Maureen is in charge of renting a climbing wall for the school’s fundraiser. The equation y = 170x represents the total cost of
barxatty [35]

Answer:

Company A and B

Step-by-step explanation:

For company A- 170 is the cost for one hour

For company B- 170 is the cost for one hour

For company C- 175 is the cost for one hour

So company A and B offer the best deal since they both offer $170 per hour.

8 0
2 years ago
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