Which expression is equivalent to i 2337<br> O 1<br> O -1<br> O i<br> O -i

A trucking firm has a large inventory of spare parts that have been in storage for a long time. It knowsthat some proportion of

Debora [2.8K]

Answer:

$0.1546\leq \widehat{p}\leq 0.3513$

Step-by-step explanation:

The firm tests 75 parts, and finds that 0.25 of them are notusable

n = 75

x = 0.25 \times 75 = 18.75≈19

$\widehat{p}=\frac{x}{n}$

$\widehat{p}=\frac{19}{75}$

$\widehat{p}=0.253$

Confidence level = 95%

So, Z_\alpha at 95% = 1.96

Formula of confidence interval of one sample proportion:

$=\widehat{p}-Z_\alpha \sqrt{\frac{\widehat{p}(1-\widehat{p}}{n}}\leq \widehat{p}\leq \widehat{p}+Z_\alpha \sqrt{\frac{\widehat{p}(1-\widehat{p}}{n}}$

$=0.253-(1.96)\sqrt{\frac{0.253(1-0.253)}{75}}\leq \widehat{p}\leq0.253+(1.96)\sqrt{\frac{0.253(1-0.253}{75}}$

Confidence interval $=0.1546\leq \widehat{p}\leq 0.3513$

7 0

3 years ago

Find the amount of time that has elapsed.Assumed that the given below are of the same day.write your solution.

belka [17]

1: ----> 2:00
2: ----> 4:45
3: -----> 2:15
4: -----> 4:41
5: -----> 16:15

8 0

3 years ago

What is 5/6 divided by-2/3

liraira [26]

Answer: -5/4

Step-by-step explanation:

Apply the fraction rule: a/-b = -a/b

-5/6/2/3

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Divide fractions: a/b/c/d = a x d/ b x c

-5 x 3 / 6 x 2

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Multiply the numbers: 6 x 2 = 12

-5 x 3 / 12

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Multiply the numbers: 5 x 3 = 15

-15/12

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Cancel the common factor.3

-5/4

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Sorry if this is a little confusing but your answer to the question is ( -5/4 )

3 0

3 years ago

Through: (3,3), parallel to y=8/3x+5

pshichka [43]

Answer:

(0,5)

Step-by-step explanation:

5 0

3 years ago

How to multiply how far would a car go if it travels at 50 km an hour for 3 hours?

ale4655 [162]

1 hour = 50 km
3 hours = 50 x 3 = 150 km

Answer: The car would go for 150 km in 3 hours.

8 0

4 years ago

Which expression is equivalent to i 2337 O 1 O -1 O i O -i