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4 years ago

Find the shaded area

Mathematics

2 answers:

Feliz [49]4 years ago

7 0

Are you supposed to shade something in? or find out the overall area of the thing?

podryga [215]4 years ago

6 0

23*15=345

6*7=42

2*5=10

345-(42+10)=293

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John's goal is to have more then -7 dollars in his bank account by the end of the month.The variable d is the number of dollars

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3 years ago

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4, 12, 20, .. Find the 46th term.

lutik1710 [3]

Answer:

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Step-by-step explanation:

first term = 4

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3 years ago

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4 years ago

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xxTIMURxx [149]

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3 years ago

Small sample: During an economic downturn, companies were sampled and asked whether they were planning to increase their workfor

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Complete Question

The complete question is shown on the first uploaded image

Answer:

The confidence level interval is $0.016 \le C \le 0.404$

Step-by-step explanation:

The sample size is $n = 20$

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The confidence level is $c = 98$ %

The value of proportion for a plus 4 method is

$p = \frac{x+2}{n+4}$

substituting values

$p = \frac{3+2}{20+4}$

$p =0.21$

The z-critical value at confidence level of 98% is

$z_{c}=z_{0.98} = 2.33$

This values is obtained from the standard normal table

The confidence level interval can be mathematically represented as

$C =p \ \pm z_{c} * \sqrt{\frac{p(1-p)}{n+4} }$

substituting values

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$C = 0.21 \pm 0.194$

=> $0.016 \le C \le 0.404$

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3 years ago