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2 years ago

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Suppose your class sells gift wrap for $4 per package and greeting cards for $10 per package. Your class sells 205 packages in a

ll and recieves a total of $1,084. Find the number of packages of gift wrap and the number of packages of greeting cards sold.

1 answer:

FromTheMoon [43]2 years ago

3 0

Answer:

Step-by-step explanation:

1,084 divided by

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Construct the indicated confidence interval for the difference between the two population means. Assume that the two samples are

Kruka [31]

Answer:

Step-by-step explanation:

The formula for determining the confidence interval for the difference of two population means is expressed as

Confidence interval = (x1 - x2) ± z√(s²/n1 + s2²/n2)

Where

x1 = sample mean of type A paint

x2 = sample mean of type B paint

s1 = sample standard deviation type A paint

s2 = sample standard for type B paint

n1 = number of samples of type A paint

n2 = number of samples of type B paint

From the information given,

x1 = 75.7

s1 = 4.5

n1 = 11

x2 = 64.3

s2 = 5.1

n2 = 9

x1 - x2 = 75.7 - 64.3 = 11.4

√(s1²/n1 + s2²/n2) = √(4.5²/11 + 5.1²/9) = √4.709

Degree of freedom = (n1 - 1) + (n2 - 1)

df = (11 - 1) + (9 - 1) = 18

For the 98% confidence interval, the z score from the t distribution table is 2.552

Margin of error = 2.552√4.709 = 5.55

The upper boundary for the confidence interval is

11.4 + 5.55 = 16.95 hours

The lower boundary for the confidence interval is

11.4 - 5.55 = 5.85 hours

The correct option is

B. 5.85 hrs < μ1 - μ2 < 16.95 hrs

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Can someone answers this question please master it correctly if it’s corect I will mark you brainliest

GarryVolchara [31]

Answer:

4 bowlers

Step-by-step explanation:

There are 18 different hats, 6 are bowlers

Find the unit rate: 6/18 or 1/3

1 bowler out of 3 hats

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Answer:

100/1

Step-by-step explanation:

Unit rate = over 1

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500/5 = 100/1 (WE DIVIDED BY 5)

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2 years ago

For 25 points:<br> x + 5 = 10<br> 2x + ? = 20<br> Answer for "?"

Phoenix [80]

Answer:

x= 5

?=10

Step-by-step explanation:

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2 years ago

Find the distance between the points of intersection of the graphs of the functions.

Viefleur [7K]

Answer:

Find the value of x and y in coordinate form, that'll be the point of intersection.

Question 1

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Therefore, points of intersection are two

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Question 2:

Following the steps as in question 1

${ \rm{y = {x}^{2} - 4}} \\ \\{ \rm{2x - 4 = {x}^{2} - 4}} \\ \\ { \rm{ {x}^{2} = 2x }} \\ \\ { \boxed{ \rm{x = 2}}} \\ { \tt{remember : \: y = 2x - 4 }} \\ { \boxed{ \rm{y = 0}}}$

Answer: <u>(2, 0)</u>

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