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3 years ago

10

Emily catches the school bus at 7:45 am she needs 30 minutes to get dressed 15 minutes to eat breakfasts, an 10 minutes to walk

to the school bus . What latest time Emily can awake in the morning to get to the bus on time?

2 answers:

nika2105 [10]3 years ago

6 0

Answer:

6:50 am

Step-by-step explanation:

emily need 45 minutes to get dressed and eat breakfast which makes the time 7:00am then needs an extra 10 minutes to walk to school, therefore she needs to wake at 6:50am

just olya [345]3 years ago

5 0

6:50. If she wakes up at 6:50, and uses 30 minutes to get dressed, the time would be 7:20. Then if she uses 15 minutes to eat, the time would be 7:35. Lastly, if she uses her 10 minutes to walk, she’d catch the bus at 7:45. I don’t know why anyone would test their luck with that time, but that’s the answer. 6:50

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Answer:

Confidence interval : $21.506$ to $24.493$

Step-by-step explanation:

A quality analyst selects twenty racquets and obtains the following lengths:

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Sample mean = $\bar{x}=\frac{\sum x}{n}$

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Sample standard deviation = $\sqrt{\frac{(21-23)^2+(25-23)^2+(23-23)^2+(22-23)^2+(24-23)^2+(21-23)^2+(25-23)^2+(21-23)^2+(23-23)^2+(26-23)^2+(21-23)^2+(24-23)^2+(22-23)^2+(24-23)^2+(23-23)^2+(21-23)^2+(21-23)^2+(26-23)^2+(23-23)^2+(24-23)^2}{20-1}}$

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Confidence interval : $21.506$ to $24.493$

Hence Confidence interval : $21.506$ to $24.493$

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