2 years ago

Plz help with all thanks

1 answer:

6 0

2. 25°
3. 155°
4. 25°
8. 90°
7. 25°
9. 65°

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alisha [4.7K]

Answer:

Lower limit = 1007.95 cm/s

Upper limit = 1142.05 cm/s

Step-by-step explanation:

We have to calculate a 95% CI with population's standard deviation known.

The sample is size n=60, with mean M=1075.

The confidence interval can be expressed as:

$M-z*\sigma/\sqrt{n} \leq\mu\leq M+z*\sigma/\sqrt{n}$

For a 95% CI, the value of z=1.96.

$1075-1.96*265/\sqrt{60} \leq\mu\leq 1075+1.96*265/\sqrt{60} \\\\1075-67.05 \leq\mu\leq 1075+67.05\\\\ 1007.95 \leq\mu\leq 1142.05$

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3 years ago

Misha Larkins [42]

Step-by-step explanation:

You can put the value of x into the equation to solve for y. Hopes this works.

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3 years ago

const2013 [10]

how much money u need to add more detail in the question

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3 years ago

Misha Larkins [42]

<span>7/8 - 2/3 = 5/24 is the correct answer of the question </span>

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3 years ago

Fed [463]

Here’s your answer lemme know if it’s not clear

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3 years ago