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ollegr [7]
3 years ago
5

20 POINTS ANSWER FAST!

Mathematics
2 answers:
Gennadij [26K]3 years ago
5 0

Answer:

1. 83% 2.17%

Step-by-step explanation:

Dominik [7]3 years ago
5 0

Answer:

sorry no a need the point

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A courier service company wishes to estimate the proportion of people in various states that will use its services. Suppose the
a_sh-v [17]

Answer:

Probability that the sample proportion will be less than 0.03 is 0.10204.

Step-by-step explanation:

We are given that a courier service company wishes to estimate the proportion of people in various states that will use its services. Suppose the true proportion is 0.04.

Also, 469 are sampled.

<em>Let </em>\hat p<em> = sample proportion</em>

The z-score probability distribution for sample proportion is given by;

              Z = \frac{ \hat p-p}{\sqrt{\frac{\hat p(1-\hat p)}{n} } }  ~ N(0,1)

where, \hat p = sample proportion

           p = true proportion = 0.04

           n = sample size = 469

The Z-score measures how many standard deviations the measure is away from the mean. After finding the Z-score, we look at the z-score table and find the p-value (area) associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X.

So, probability that the sample proportion will be less than 0.03 is given by = P( \hat p < 0.03)

       P( \hat p < 0.03) = P( \frac{ \hat p-p}{\sqrt{\frac{\hat p(1-\hat p)}{n} } } < \frac{0.03-0.04}{\sqrt{\frac{0.03(1-0.03)}{469} } } ) = P(Z < -1.27) = 1 - P(Z \leq 1.27)

                                                                      = 1 - 0.89796 = 0.10204

Now, in the z table the P(Z \leq x) or P(Z < x) is given. So, the above probability is calculated by looking at the value of x = 1.27 in the z table which has an area of 0.89796.

Therefore, probability that the sample proportion will be less than 0.03 is 0.10204.

5 0
3 years ago
You are choosing a CD from your friend’s music collection. You can choose 1 of 4 country CDs, 1 of 3 soul CDs, or 1 of 5 pop CDs
Dima020 [189]
The answer is 12 i have answered a question just like dis disrigard the 1 and the genres just add the total number of cds
7 0
3 years ago
Read 2 more answers
Lola's Car's Gas Tank is 7/8 Full Would She Have More If She Had 4/5 Of a Tank. Why?
krok68 [10]
No she would not have a fuller tank if she had 4/5 of one instead of 7/8.
In this situation you need to convert the fractions so that they have common denominators. 
In order to achieve this I multiplied both the numerator and the denominator of 7/8 by 5.
I also multiplied both the numerator and denominator of 4/5 by 8.
7/8*5=35/40.
4/5*8=32/40.
Now you can easily tell that 7/8  is larger than 4/5.

Hope this helps! (:
6 0
3 years ago
How can I write 36-x as a word phrase
NeTakaya

Step-by-step explanation:

You can also say 36 minus by x.

3 0
2 years ago
A construction company needs to remove 2 1/6 tons of dirt from a construction site. They can remove 7/8 tons of dirt each hour.
raketka [301]
The answer is 4.

Hope I helped :)
3 0
3 years ago
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