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Ilia_Sergeevich [38]
3 years ago
8

7,9,9,7,19,6,17,14 mean____ median______ mode_________ range_____

Mathematics
1 answer:
AnnyKZ [126]3 years ago
6 0

Answer:

median: 9

mean:11

mode: 7 or 9

range 13

Step-by-step explanation:

hope it helped!

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WORTH 15 POINTS
Eduardwww [97]
6
less then or equal to
2
5 0
3 years ago
a machine can reduce 21 inches of ribbon every 3 minutes. How many feet of ribbon can the machine make in one hour?
Zarrin [17]
Okay. Let's make a proportion for this. So we can do 21/3=x/60. Let's multiply cross way. So 21 x 60 is 1260. We multiply 3 by x to get 3x. So our equation will be 3x=1260. We can isolate the equation by 3, and 1260 divided by 3 is 420. So x=420. We then have to convert into feet. So 420 divided by 12 is 35. So it would be 35 feet. Therefore, the machine can make 35feet of ribbon in a hour.
3 0
3 years ago
How many degrees are x and y?
torisob [31]
Y = 68°
Corresponding angles between parallel lines are equal

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4 0
3 years ago
Read 2 more answers
HELPPP PLEASE .☆........
tiny-mole [99]

Answer:

I think its 1/3/ and 4. But I dont know tho. just make sure with other.

Step-by-step explanation:

7 0
3 years ago
a sociologist develops a test to measure attitudes towards public transportation and 27 randomly selected subjects are given the
horsena [70]

Answer:

The 95% confidence interval for the mean score is:

\mu ∈ (67.73,\ \ 84.67)

Step-by-step explanation:

We want to estimate the population mean, that is, the average score of all the subjects.

An estimator for the population mean μ is {\displaystyle {\overline {x}}}

Since the sample size is 27 then we use the  statistic  t_{\frac{\alpha}{2}}  with 27-1 = 26 degrees of freedom

The confidence interval for the mean is:

({\displaystyle {\overline {x}}} + t_{\frac{\alpha}{2}}\frac{S}{\sqrt{n}},\ \ {\displaystyle {\overline {x}}} - t_{\frac{\alpha}{2}}\frac{S}{\sqrt{n}})

Where

{\displaystyle {\overline {x}}}=76.2 is the average score of the sample

S=21.4 is the standard deviation of the sample

n= 27 is the sample size

t_{\frac{\alpha}{2}} = 2.056 for a confidence level of 95% and 26 degrees of freedom

Then confidence interval is

(76.2 + 2.056\frac{21.4}{\sqrt{27}},\ \ {76.2 - 2.056\frac{21.4}{\sqrt{27}})

(76.2 + 8.467,\ \ 76.2 - 8.467)

\mu ∈ (67.73,\ \ 84.67)

7 0
3 years ago
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