1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Luden [163]
3 years ago
15

Can someone help me with a and b

Mathematics
1 answer:
Alinara [238K]3 years ago
8 0
I only know the answer for B. so the answer for B is 43.3
You might be interested in
In a random sample of 75 individuals, 52 people said they prefer coffee to tea. 99.7% of the population mean is between 84/80/74
Dmitriy789 [7]
Using a 1-sample z-interval for the population proportion with confidence level 0.997, the sample probability is 0.69 with margin of error of 0.16, so between 0.69+0.16=0.85 of the population and 0.69-0.16=0.53 of the population prefers coffee.  84% and 54% are the correct answers.
7 0
4 years ago
Read 2 more answers
What is the solution to the equation 9^(x - 1) = 27?
s344n2d4d5 [400]
9^{x - 1} = 27 \\ln(9^{x - 1}) = ln(27) \\(x - 1)ln(9) = ln(27) \\x - 1 = \frac{ln(27)}{ln(9)} \\x = \frac{ln(27)}{ln(9)} + 1 \\x = 2.5

Thhe answer is equal to A. x = 2.5.
5 0
3 years ago
Read 2 more answers
Angela designed a hat pin in the shape of a triangle. All sides of the hat pin are different length. Which type of triangle is A
Trava [24]
It's a scalene triangle, a triangle where all of the sides are different lengths.
5 0
4 years ago
4. As part of a promotion for a new type of cracker, free samples are offered to shoppers in a local supermarket. The probabilit
RUDIKE [14]

Answer:

For this case we need to check the conditions in order to use the normal approximation:

1) np = 60*0.3= 18>10

2) n(1-p) = 60*(1-0.3)= 42>10

Since both conditions are satisfied and the independence condition is assumed we can use the normal approximation given by:

\hat p \sim N (\hat p, \sqrt{\frac{\hat p(1-\hat p)}{n}})

The mean would be given by:

\mu_{\hat p}=0.3

And the deviation is given by:

\sigma_{\hat p}= \sqrt{\frac{0.3*(1-0.3)}{60}}= 0.0592

Step-by-step explanation:

For this case we know the following info:

n =60 represent the sample size

\hat p = 0.3 represent the estimated proportion of people that will buy a packet of crackers after tasting

For this case we need to check the conditions in order to use the normal approximation:

1) np = 60*0.3= 18>10

2) n(1-p) = 60*(1-0.3)= 42>10

Since both conditions are satisfied and the independence condition is assumed we can use the normal approximation given by:

\hat p \sim N (\hat p, \sqrt{\frac{\hat p(1-\hat p)}{n}})

The mean would be given by:

\mu_{\hat p}=0.3

And the deviation is given by:

\sigma_{\hat p}= \sqrt{\frac{0.3*(1-0.3)}{60}}= 0.0592

6 0
3 years ago
Suppose Nadia raises her rate by $0.75 an hour. How many hours would she need to work to earn the same amount of money she made
Amanda [17]
what is the first two weeks of month equals?
3 0
4 years ago
Read 2 more answers
Other questions:
  • When evaluating (6.28 x 10^12) over (3.14x10 ^ 4), what will be the exponent of 10 in the quotient?
    12·2 answers
  • I NEED HELP PLEASE PLEASE HELP ME :(
    5·1 answer
  • I need help but it’s easy i’m just dumb
    10·2 answers
  • A horse has 13 entries and one person owns 4 of those horses . Assuming that there are no ties , what is the probability that th
    5·1 answer
  • A train travels at 75 miles per hour. What equation that compares the time (t) with the distance (d)?
    14·2 answers
  • Which line is parallel to line r? line p line q line s line t
    8·2 answers
  • Four sizes of scaled text are shown. Four rows of text and numbers. The first row contains a question mark followed by the phras
    13·1 answer
  • Help please due in 25 minutes !!!
    6·1 answer
  • What is the image of (-4,-2) after a reflection over the y=-x​
    6·2 answers
  • Solve pls brainliest
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!