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4 years ago

5

Everyone wants to watch football games on Thanksgiving. There are 3 games on in the afternoon and 3 on at night. How many differ

ent combinations of games can they watch?

1 answer:

lora16 [44]4 years ago

8 0

Answer:

2

Step-by-step explanation:

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3 years ago

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Step-by-step explanation:

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3 years ago

7(b+4)=14 find the value of the variable

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Step-by-step explanation:

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3 years ago

A toy maker claims his best product has an average lifespan of exactly 14 years. A skeptical quality control specialist asks for

slamgirl [31]

Answer:

interval = [17.3948 , 20.6052]

Step-by-step explanation:

given,

random sample (n) = 45

average product lifespan = 19 years

standard deviation = 4 years

confidence interval of 99 % = ?

we know,

t* = qt(1.99/2 + 44 ) = qt(0.995,44)

t* = 2.692

so,

interval

$x = 19 \pm t* \times (\dfrac{s}{\sqrt{n}})$

$x = 19 \pm 2.692 \times (\dfrac{4}{\sqrt{45}})$

$x = 19 \pm 2.692 \times 0.5963$

$x = 19 \pm 1.6052$

interval = [19 - 1.6052 , 19 + 1.6052]

interval = [17.3948 , 20.6052]

4 0

3 years ago