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madam [21]
3 years ago
7

PLEASE HELP!!

Mathematics
2 answers:
zhannawk [14.2K]3 years ago
5 0

Answer:

the answer is correct 2 one

Ksivusya [100]3 years ago
4 0

Answer:

A. Beef uses significantly more land than plants to produce 100 grams of protein

Step-by-step explanation:

Let's examine each answer choice.

A.  Beef uses significantly more land than plants to produce 100 grams of protein

This is true. Beef uses 163.6 square meters of land, while peas only use 3.4 square meters.

B. Meat production is more efficient than farming protein from fish and prawns

This is not true. Meat production is less efficient, because it uses more land than fish and prawns.

C. Lamb and mutton produce more protein per square meters than pig meat and poultry

This is false. Lamb produces less protein per square meter, because it takes 184.8 square meters to produce 100 grams of protein, while pig meat only takes 10.7 square meters to make the same amount.

D. Nuts and grains produce less protein per square meter than milk and cheese

This is false. Milk and cheese require more square meters per 100 grams of protein/ Therefore they produce less protein per square meter, not the nuts and grains.

So, the best answer choice is A. Beef uses significantly more land than plants to produce 100 grams of protein

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Read 2 more answers
If you want to construct a 90% confidence interval, what critical value (z*) should you use? Group of answer choices 2.576 1.960
Rom4ik [11]

Answer:

For this case we know that the confidence level is 90% so then the significance level is \alpha=1-0.9 =0.1 and \alpha/2 =0.05. And we can find in the normal standard distribution a value who accumulates 0.5 of the area on each tail and we got:

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And the best option would be:

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Step-by-step explanation:

We assume that the parameter of interest is \theta and we can assume that the distribution for this parameter is normally distributed so then the confidence interval assuming a two sided interval is given by:

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Where \hat \theta represent the estimator for the parameter, SE the standard error and z_{\alpha/2} the critical value.

For this case we know that the confidence level is 90% so then the significance level is \alpha=1-0.9 =0.1 and \alpha/2 =0.05. And we can find in the normal standard distribution a value who accumulates 0.5 of the area on each tail and we got:

z_{\alpha/2}= \pm 1.645

And the best option would be:

1.645

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