3 years ago

Square root of 18 to the power of 2 plus 24 to the power of 2

Mathematics

1 answer:

IrinaVladis [17]3 years ago

3 0

Answer:

594

Step-by-step explanation:

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Answer:

90% confidence interval, (109.47,116.53)

For 95% confidence interval (108.79,117.21)

Step-by-step explanation:

n =50

mean = 113

standard deviation = 15.20

a.) For 90% confidence interval, z=1.645

90% confidence interval is

$(113 - \frac{1.645*15.20}{sqrt(50)},113 + \frac{1.645*15.20}{sqrt(50)}}$

=(113 - 3.53, 113 + 3.53)

=(109.47,116.53)

b.)For 95% confidence interval, z = 1.96

95% confidence interval is

$(113 - \frac{1.96*15.20}{\sqrt(50)},113 + \frac{1.96*15.20}{\sqrt(50)}$

=(113 - 4.21, 113 + 4.21)

=(108.79,117.21)

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Stolb23 [73]

Radius is half d so r us 4.5
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70 students at a school were asked to complete a survey about the location of their next field trip. 28 students chose the zoo a

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Step-by-step explanation:

sum means add

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