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3 years ago

Note that multiplying by 1/9 gives the same result as dividing everything by 9

Mathematics

1 answer:

melomori [17]3 years ago

5 0

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Information about the proportion of a sample that agrees with a certain statement is given below. Use StatKey or other technolog

Jet001 [13]

Answer:

The Attachment has the answer

Step-by-step explanation:

6 0

4 years ago

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

leva [86]

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 $n = 20$

The number planning to increase workforce is $x = 3$

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

$C = 0.21 \pm 2.33 * \sqrt{\frac{0.21(1- 0.21)}{20 +4} }$

$C = 0.21 \pm 0.194$

=> $0.016 \le C \le 0.404$

7 0

3 years ago

Milan spent a total of $70 at the grocery store. Of this amount, he spent $63 on fruit. What percentage of the total did he spen

bekas [8.4K]

95% Is your answer c:

7 0

4 years ago

Read 2 more answers

You make 12 per hour and work for 40 hours in week.3% of your paycheck is taken by taxes.After taxes how many of your salary wil

wariber [46]

Answer:

$478.56

Step-by-step explanation:

12*40=480

.003(.3%)*480=1.44

480-1.44=$478.56 after taxes.

4 0

3 years ago

A company prices its tornado insurance using the following assumptions:

ziro4ka [17]

Answer:

.441320612

44.132%

Step-by-step explanation:

This is binomial

fewer than 3 is equal to p(0)+p(1)+p(2)

$p(0)={19\choose0}*.15^0*(1-.15)^{19}=.045599448\\p(1)={19\choose1}*.15^1*(1-.15)^{18}=.152892268\\p(2)={19\choose2}*.15^2*(1-.15)^{17}=.242828896\\p(0)+p(1)+p(2)=.441320612$

8 0

3 years ago