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artcher [175]
2 years ago
10

We believe that 93​% of the population of all Business Statistics I students consider statistics to be an exciting subject. Supp

ose we randomly and independently selected 28 students from the population. If the true percentage is really 93​%, find the probability of observing 27 or more students who consider statistics to be an exciting subject.
Mathematics
1 answer:
maria [59]2 years ago
6 0

Answer:

the probability of observing 27 or more students 0.818

Step-by-step explanation:

given data

sample n = 28 students

population = 93%

to find out

the probability of observing 27 or more students

solution

we will find Z value for CI 93%  

from z table we get Z is 1.812 for Cl 93%

so P(27 ≤ Z ≤ 28)

we know Z = 0.182

= 1 - 0.182

= 0.818

the probability of observing 27 or more students 0.818

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When Vivian was born, her grandparents decided to help save for her college education. They put $2000 in an account that pays 1.
melomori [17]

Answer:

P = 2000 * (1.00325)^(t*4)

(With t in years)

Step-by-step explanation:

The formula that can be used to calculated a compounded interest is:

P = Po * (1 + r/n) ^ (t*n)

Where P is the final value after t years, Po is the inicial value (Po = 2000), r is the annual interest (r = 1.3% = 0.013) and n is a value adjusted with the compound rate (in this case, it is compounded quarterly, so n = 4)

Then, we can write the equation:

P = 2000 * (1 + 0.013/4)^(t*4)

P = 2000 * (1.00325)^(t*4)

4 0
3 years ago
Total Price: The sales tax rate is 5%. If the sales tax on a 10-speed bicycle is $9, what is the purchase price?
Lesechka [4]

Answer:

The purchase price is $180

The total price is: $189

Step-by-step explanation:

Sales tax rate = 5\%

Sales tax on bike = $9

We need to find the purchase price.

Let purchase price = x

We know that Sales tax = 5% of x

and Total price = Purchase Price + Sales tax

So, we can write:

Sales tax = 5% of x

Putting values and finding x

9 =5\% \:of\: x\\9=\frac{5}{100}\:of\:x \\x= \frac{9*100}{5}\\x=180

So, the value of x i.e Purchase price = $180

The purchase price is $180

Now finding the total price of bicycle

Total price = Purchase Price + Sales tax

Total price = 180 + 9

Total price = $189

So, The total price is: $189

6 0
2 years ago
hree different stocks were ordered. The purchase prices were 8 ⅜ dollars, 12 ⅛ dollars and 15 ⅜ dollars.how much was paid for al
Murljashka [212]
When you add all of the totals together your total amount will be $35.875
8 0
2 years ago
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Given f-1(x)=-34x+2, which equation represents f(x)?
Elina [12.6K]
There is the answer

4 0
2 years ago
Estimate the sum of 703 + 620
Natalija [7]
When you estimate, you round each number, the add.
We round them to 
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So our non estimated answer is 1323
But our estimated answer is 1320
7 0
3 years ago
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