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ratelena [41]
3 years ago
6

Grace sureyed 60 random students in her school.Of these 14 said they enjoy watching Dancing with the star.A total of 570 student

s in the school. How many these are expected to enjoy dancing with the Stars?
Mathematics
1 answer:
Amiraneli [1.4K]3 years ago
4 0
I think it is 133 students that like Dancing with the stars
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Mean=5

Step-by-step explanation:

add the numbers given and divide it by the number of numbers given

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Barbara can pay either $80 per month or one lump sum of $800 per year for car insurance. How much does she save yearly if she ch
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Answer:

$160

Step-by-step explanation:

In the monthly payment option she would pay $80 per month, therefore in a year (12 months) she would pay:

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The money she would save is:

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NNADVOKAT [17]

Answer:

(0.102, -0.062)

Step-by-step explanation:

sample size in 2018 = n1 = 216

sample size in 2017 = n2 = 200

number of people who went for another degree in 2018 = x1 = 54

number of people who went for another degree in 2017 = x2 = 46

p1 = x1/n1 = 0.25

p2 = x2/n2 = 0.23

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<h2> p1 -p2 ± z*\sqrt{((1-p1)*p1)/n1 + ((1-p2)*p2/n2}</h2>

0.25 -0.23 ± 1.96*\sqrt{((1 - 0.25) * 0.25)/216 + ((1 - 0.23) *0.23/200}

= 0.02 ± 1.96 * 0.042

= 0.02 + 0.082 = <u>0.102</u>

= 0.02 - 0.082 = <u>-0.062</u>

<u>There is 95% confidence that there is a difference that lies between  - 0.062 and 0.102 on the proportion of students who continued their education in the years, 2017 and 2018.</u>

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<u>There is no significant difference between the two.</u>

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