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Mars2501 [29]
3 years ago
9

Anybody good at solving solutions?? Need done ASAP

Mathematics
1 answer:
Leto [7]3 years ago
4 0
I am pretty sure that B is the answer
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Find the mean for the data items
schepotkina [342]

Answer:

4.5

Step-by-step explanation:

Given the data :

Score, x ____: 1, 2, 3, 4, 5, 6, 7, 8

Frequency, F : 1, 5, 1, 4, 4, 1, 5, 1

This is a grouped data: The mean of a grouped data is given as :

Mean (xbar) = ΣFx / ΣF

ΣFx = (1*1)+(2*5)+(3*1)+(4*4)+(5*4)+(6*1)+(7*5)+(8*1) = 99

ΣF = (1+5+1+4+4+1+5+1) = 22

Mean (xbar) = ΣFx / ΣF = 99 / 22 = 4.5

3 0
2 years ago
A hexagonal pyramid is a regular polyhedron –True/False
sukhopar [10]

Answer:

True.

Step-by-step explanation:

Because I looked it up. =)

3 0
3 years ago
In order to set rates, an insurance company is trying to estimate the number of sick days that full-time workers at an auto repa
kotegsom [21]

Answer: 31

Step-by-step explanation:

Formula to find the sample size is given by :_

n=(\dfrac{z^*\cdot \sigma}{E})^2

, where z*= critical value corresponds to confidence level.

\sigma = population standard deviation.

E= Margin of error.

As per given , we have

\sigma=2.8

E=1

We know that critical value corresponding to 95% confidence level = z*=1.96

Then, the required sample size would be :

n=(\dfrac{(1.96)\cdot (2.8)}{1})^2

n=(5.488)^2

n=30.118144\approx31

Hence, the required minimum sample size = 31

3 0
3 years ago
A seller has a house that is 1700 ft^2. The neighborhood comps show the line of best fit to be y=0.074x + 50.48. What is a fair
natita [175]
Let the price for the house be x and the square feet of the house be y,
when the house is 1700 sq ft, y = 1700.

y = 0.074x + 50.48
1700 = 0.074x + 50.48
0.074x = 1700 - 50.48
0.074x = 1649.52
x = 22 290.81 (to the nearest cent)

A fair price for this house would be $22 290.81.
4 0
3 years ago
I neeed helppp please help me
r-ruslan [8.4K]

Answers:

  • A) The equation is d = 2t
  • B) Independent variable = time; dependent variable = amount of cookies

=========================================================

Explanation:

The independent variable is always long the horizontal axis. Often this is x, but we are using t in this case.

The variable t represents the amount of time in minutes. For instance, t = 2 means 2 minutes have elapsed. At this time, 4 cookies have been eaten as shown by the point (2,4). As another example, the point (3,6) means that d = 6 cookies have been eaten at time t = 3 minutes.

The equation is d = 2t because the '2' represents the rate of change of "eating 2 cookies per minute". Whatever the time value (t) is, we double it to get the value of d, which is the number of cookies eaten.

6 0
3 years ago
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