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Vanyuwa [196]
3 years ago
11

A health survey determined the mean weight of a sample of 762 men between the ages of 26 and 31 to be 173 pounds, while the mean

weight of a sample of 1,561 men between the ages of 67 and 72 was 162 pounds. The difference between the mean weights is significant at the 0.05 level. Determine the meaning of this significance level.
Mathematics
1 answer:
Sladkaya [172]3 years ago
3 0

Answer:

Step-by-step explanation:

The difference in weights compared over the two different groups is significant and at 0.05 level of significance, the age of men is directly linked with their mean weight.

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10-kg batch of a food product has a moisture content of175% dry basis. Calculate the amount of water to beremoved from the produ
sleet_krkn [62]

Answer:

4.9kg of water

Step-by-step explanation:

Dry basis is the percentage ratio of moisture amount to amount of dry product which is 175%

Ratio of moisture amount to dry product = 175 : 100

Mass of food product = 10kg

Amount of moisture in food product = 175/175+100 × 10kg = 175/275 × 10kg = 6.4kg

Wet basis is the percentage ratio of the moisture amount to the total weight of material which is 15%

Ratio of moisture amount to total weight of material is 15 : 100

Amount of moisture in food product = 15/100 × 10kg = 1.5kg

Amount of water contained in the final product = 1.5kg

Amount of other components in the food product = 10kg - 6.4kg = 3.6kg

Total amount = 1.5kg + 3.6kg = 5.1kg

% of water = 1.5kg/5.1kg × 100 = 29%

3 0
3 years ago
'Nine less than the product of four and a number
maxonik [38]

Answer:

(4 x X)-9

Step-by-step explanation:

I think this is correct pls tell me if this is wrong  

Hope this helps

7 0
2 years ago
Margaret bought 40 ounces of bananas for $5.00. How much did Robert pay for 12 ounces?
Brrunno [24]
It’s 57.23 dhe paided for
3 0
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Marcos has 3/5 of a pizza remaining and gives his friend 1/5 of the remaining pizza. How much pizza is left over?
LuckyWell [14K]

Answer

at first I said 1/2 but it's 2/5's.

Step-by-step explanation:

\frac{3}{5}  -  \frac{1}{5 }  =  \frac{2}{5}

3 0
3 years ago
How many pieces ,each of length 3 ¾ m can be cut from a rope of length 30m?​
Nadusha1986 [10]

Answer:

8

Step-by-step explanation:

Divide 30 by 3.75 to get 8.

Hope that this helps!

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3 years ago
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