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nlexa [21]
3 years ago
15

Suppose that a Coke/Pepsi survey was conducted of 40 randomly selected individuals from Gainesville. Thirty people selected Coke

. Which of the following statements correctly describes how the confidence interval for the population proportion of people that prefer Coke should be computed?
a. There are not 15 successes and 15 failures. A confidence interval can not be done.
b. There are not 15 successes and 15 failures. A confidence interval can be computed by adding 2 successes and 2 failures.
c. There are not 15 successes and 15 failures. A confidence interval can be computed by adding 4 successes and 5 failures.
d. There are at least 15 successes and 15 failures. A large sample confidence interval for the population proportion can be computed with no additional value.
Mathematics
1 answer:
Aleksandr-060686 [28]3 years ago
4 0

Answer:yo

Step-by-step explanation:yo

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A manufacturer of screened sweatshirts includes a shipping charge of $5.99 on all online orders. Customers also pay 2.5% tax on
ankoles [38]

Answer:

t = 1.025c + 5.99

Step-by-step explanation:

Recall : general for of a linear equation is given by :

y = mx + c

Given the following :

Item cost = c

Shipping charge = $5.99

Tax on purchases = 2.5%

Total cost, t

t = c + tax + shipping cost

Tax on purchase : 2.5% * item cost ; 0.025c

Shipping = $5.99

Hence,

Total cost, t = c + 0.025c + 5.99

t = 1.025c + 5.99

8 0
2 years ago
To estimate the number of people in Springfield, population 10,000, who have a swimming pool in their backyard, 250 people were
Andrei [34K]

Answer:

2400 people

Step-by-step explanation:

Let x be the number of people who had a swimming pool in the population of 10,000,

Thus, the ratio of people who had swimming pool to the total population = \frac{x}{10000}

Since, out of 250 people 60 had swimming pool,

So, the ratio of the people who had swimming pool to the total population = \frac{60}{250}

\because \frac{x}{10000}=\frac{60}{250}

\implies 250x=600000

\implies x=\frac{600000}{250}=2400

Hence, 2400 people in the city might one expect to have a swimming pool.

First option is correct.

8 0
3 years ago
The total cost of an order of gift baskets includes the cost of each gift basket plus a one time delivery fee. The cost of each
Helen [10]

Answer:

x = cost of each gift basket = $14.5

y = one time delivery fee = $135

Step-by-step explanation:

Let

x = cost of each gift basket

y = one time delivery fee

40x + y = 715 (1)

400x + y = 5935 (2)

Subtract (1) from (2)

400x - 40x = 5935 - 715

360x = 5220

x = 5220/360

x = 14.5

Substitute x = 14.5 into (1)

40x + y = 715 (1)

40(14.5) + y = 715

580 + y = 715

y = 715 - 580

y = 135

x = cost of each gift basket = $14.5

y = one time delivery fee = $135

4 0
3 years ago
A social problem can best be described as:
Reil [10]

Answer:

A.

Step-by-step explanation:

an issue that negatively impacts a group of people.

3 0
3 years ago
Whats 5 plus 73 pls help someone
trasher [3.6K]
78 is your answer............
8 0
3 years ago
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