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nika2105 [10]
3 years ago
10

Latasha is a waitress at Seventh Heaven Hamburgers. She wants to estimate the mean amount each group at a table leaves for a tip

. A random sample of 42 tables had a mean of = $7.30. Based on long term experience, s ≈ $2.92. Find a 90% confidence interval for the average amount left by all groups..

Mathematics
1 answer:
elena55 [62]3 years ago
3 0
Forgive me if this is wrong. I haven't done stat in a year, but comment if you need clarification!

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Write the equation of the line with a slope of 1/4 that passes through the point (8, -3).
pantera1 [17]

Answer:

-7

Step-by-step explanation:

-8 = (-1/4)(4) + b

-8 = -1 + b

b = -7

8 0
3 years ago
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Mrrafil [7]

Answer:

10.14 years

Step-by-step explanation:

The following equation describes the percentage of all eligible voters that are registered to vote as a function of time:

V=100-30e^{-0.04t}

The time 't' for which V(t) = 80 is the amount of years required for the percentage of registered voters to reach 80%:

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It will take 10.14 years until 80% of all eligible voters in your county are registered to vote

8 0
3 years ago
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A tortoise moves forward 15 meters in one hour. It turns around and crawls 10 meters in the
schepotkina [342]

Answer:

Below.

Step-by-step explanation:

15+10+8=33.

5 0
2 years ago
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|a+x|/2 − |a−x|/2 , if a=−2; x=−6<br><br> PLZ HELP!!!
Alchen [17]

Answer:

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|a+x|/2 − |a−x|/2 , if a=−2; x=−6

Evaluate this expression

Simply plug in the numbers

| -2 + -6 | /2   -   |-2 - -6|/2

|-8| /2  -   |4|/2

4 - 2

2

8 0
3 years ago
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For a regular polygon with n sides, interior angle

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= [(7 - 2) × 180°]/7

= (5 × 180°)/7

= 900°/7

= (900/7)°

= 128.571° [approximately]

7 0
3 years ago
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