answer.
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
GalinKa [24]
1 year ago
5

An Internet service provider sampled 540 customers, and finds that 75 of them experienced an interruption in high-speed service

during the previous month.a) Obtain a point estimate, to at least three decimal places, for the population proportion of all customers who experienced an interruption in high-speed service during the previous month.b) Assuming the sample size is less than 5% of the population size, why can the sampling distribution of p-hat, the sample proportion of customers who experienced an interruption in high-speed service during the previous month, be approximately normal?c) Construct a 90% confidence interval for the proportion of all customers who experienced an interruption in high-speed service during the previous month.d) You wish to conduct your own study to determine the proportion of all customers who experienced an interruption in high-speed service during the previous month. What sample size would be needed for the estimate to be within 2 percentage points with 98% confidence if you use the point estimate obtained in part (a)?e) You wish to conduct your own study to determine the proportion of all customers who experienced an interruption in high-speed service during the previous month. What sample size would be needed for the estimate to be within 2 percentage points with 98% confidence if you don
Mathematics
1 answer:
Nastasia [14]1 year ago
7 0

Answer:

ill answer in a minute

Step-by-step explanation:

You might be interested in
A manufacturer of skis offered chain discounts of 10/5/4 to many of its customers. Joe Jones ordered skis that had a total list
expeople1 [14]
,Okay, so here is how to calculate the amount of the trade discount:

I: $149,500 * .10 (10%) = 14,950 (this is the 10% discount)
149,500 - 14,950 = 134,550 (how much it costs with a 10% discount)

II: 134,550 * .5 (5%) = 6727.50
134,550 - 6727.50 = 127,822.50

III: 127,822.50 * .4 (4%) = 5112.90

The amount of the trade discount is: $14,950 + $6727.50 + $5112.90 = 26,790.40 dollars.
6 0
1 year ago
Mr. Lobo is building a fence rectangular around his rectangular yard. It is 16 feet long and 14 feet wide. How much feet of feet
lawyer [7]

Answer:

30

Step-by-step explanation:

14+16 1. Break it down 14 is equal to 10+4 16 is equal to 10+6 2. Add the biggest numbers together first 10+10 = 20 3. Add the smaller numbers together 6+4 = 10 4. Add all of the numbers together 20+10 = 30

4 0
2 years ago
In each of Problems 5 through 10, verify that each given function is a solution of the differential equation.
WARRIOR [948]

Answer:

For First Solution: y_1(t)=e^t

y_1(t)=e^t is the solution of equation y''-y=0.

For 2nd Solution:y_2(t)=cosht

y_2(t)=cosht  is the solution of equation y''-y=0.

Step-by-step explanation:

For First Solution: y_1(t)=e^t

In order to prove whether it is a solution or not we have to put it into the equation and check. For this we have to take derivatives.

y_1(t)=e^t

First order derivative:

y'_1(t)=e^t

2nd order Derivative:

y''_1(t)=e^t

Put Them in equation y''-y=0

e^t-e^t=0

0=0

Hence y_1(t)=e^t is the solution of equation y''-y=0.

For 2nd Solution:

y_2(t)=cosht

In order to prove whether it is a solution or not we have to put it into the equation and check. For this we have to take derivatives.

y_2(t)=cosht

First order derivative:

y'_2(t)=sinht

2nd order Derivative:

y''_2(t)=cosht

Put Them in equation y''-y=0

cosht-cosht=0

0=0

Hence y_2(t)=cosht  is the solution of equation y''-y=0.

3 0
1 year ago
We suspect that automobile insurance premiums (in dollars) may be steadily decreasing with the driver's driving experience (in y
ANTONII [103]

Answer:

D) a chi square test for independence.

Step-by-step explanation:

Given that we  suspect that automobile insurance premiums (in dollars) may be steadily decreasing with the driver's driving experience (in years), so we choose a random sample of drivers who have similar automobile insurance coverage and collect data about their ages and insurance premiums.

We are to check whether two variables insurance premiums and driving experience are associated.

Two categorical variables are compared for different ages and insurance premiums.

Hence a proper test would be

D) a chi square test for independence.

8 0
1 year ago
A shipping company borrows $70 million at 5% p.a. compound interest to build a new cruise ship. If it repays the debt after 3 ye
dem82 [27]

Answer:

about 11.03 million

Step-by-step explanation:

Use the equation I = P(1+r/100)^n - P (I is the compound interest, P is the principle, r is the rate percent, and n is the number of years):

Substitute the values given:

I = 70,000,000(1 + 5/100)^3 - 70,000,000

Use a calculator to solve and you will get ~11.03 million.

5 0
2 years ago
Other questions:
  • X(4-k)=p solve for k
    12·2 answers
  • What is the value of s and the length of side BC if ABCD is a rhombus?
    8·2 answers
  • Mr. Parker wants to rent a cargo van for a day. It will cost the daily fee of $50 plus $0.35 per mile driven. Part A Let m = the
    10·1 answer
  • A triangular banner has an area of 351cm2. The length of the base is two centimeters longer than four times the height. Find the
    10·1 answer
  • I WILL AWARD BRAINLIEST!! PLEASE HELP!!
    11·1 answer
  • Given the pre-image ABCD and the image after a dilation, A'B'C'D', what is true about the polygons? Check all that apply.
    7·2 answers
  • Last year, a bakery sold w loaves of bread. This year, the bakery sold three more than twice the number of loaves of bread sold
    13·1 answer
  • 2. José is using 12 brown tiles and
    5·1 answer
  • Jane is taking two courses. The probablity she passes the first course is 0,7. The probablity she passes the second course is 0.
    13·1 answer
  • Snow avalanches can be a real problem for travelers in the western United States and Canada. A very common type of avalanche is
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!