Answer:
The answer would be 2 1/4 days
Step-by-step explanation:
Take 54 and divide it by 24 (since there are 24 hours in a day):
54 / 24 = 2.25 or 2 1/4
Hope this helps! If so, please mark brainliest!! :)
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❖ Carlos left home at 9:13.
Tina left 20 mins after Pedro so add 20 mins:
8:35 + 20 = 8:55
Carlos left 18 mins after Tina so add 18 mins:
8:55 + 18 = 9:13
~ ʜᴏᴘᴇ ᴛʜɪꜱ ʜᴇʟᴘꜱ! :) ♡
~ ᴄʟᴏᴜᴛᴀɴꜱᴡᴇʀꜱ
Answer:
14 cents per oz
Step-by-step explanation:
399/28.5=14
Hope this helps!
Answer:
b. quadruple the sample size.
Step-by-step explanation:
Given that a 95% confidence is given by (15,20) .
this implies that mean = average of lower and higher bounds of confidence interval = ![\frac{15+20}{2} =17.5](https://tex.z-dn.net/?f=%5Cfrac%7B15%2B20%7D%7B2%7D%20%3D17.5)
Margin of error = Upper bound - Mean = ![20-17.5 = 2.5](https://tex.z-dn.net/?f=20-17.5%20%3D%202.5)
Confidence level = 95%
Critical value = 1.96
Std error = ![\frac{2.5}{1.96} =1.27551](https://tex.z-dn.net/?f=%5Cfrac%7B2.5%7D%7B1.96%7D%20%3D1.27551)
Std devition = Std error * sqrt n = 6.3775
If we want to reduce margin of error by half we must get margin of error as 1.25
For that std error for same critical value = 0.63775
Std deviation did not change
So sample size only changed which implies that sample size is 4 times the original
b. quadruple the sample size.