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Zepler [3.9K]
3 years ago
7

Carol is baking cookies and needs 2 1/4 cup of flour,2/3 cup of white sugar, 1/4 cup of brown sugar and 1/16 cup of baking soda.

If the amount of white sugar were increased by a factor of 2 1/2, in cups, how much white sugar with there be?
Mathematics
2 answers:
Lorico [155]3 years ago
7 0
Carol is baking cookies and needs 2 1/4 cup of flour,2/3 cup of white sugar, 1/4 cup of brown sugar and 1/16 cup of baking soda. If the amount of white sugar were increased by a factor of 2 1/2, in cups, how much white sugar with there be?

Carol is baking cookies and needs 2 1/4 cup of flour,2/3 cup of white sugar, 1/4 cup of brown sugar and 1/16 cup of baking soda. If the amount of white sugar were increased by a factor of 2 1/2, in cups, how much white sugar with there be?
FrozenT [24]3 years ago
3 0

Answer:

1 2/3

Step-by-step explanation:

<u>Just</u><u> </u>multiply 2/3 by 2.5

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3 years ago
According to a study done by Wakefield Research, the proportion of Americans who can order a meal in a foreign language is 0.47.
UNO [17]

Answer:

Probability that the proportion of Americans who can order a meal in a foreign language is greater than 0.5 is 0.19766.

Step-by-step explanation:

We are given that according to a study done by Wake field Research, the proportion of Americans who can order a meal in a foreign language is 0.47.

Suppose a random sample of 200 Americans is asked to disclose whether they can order a meal in a foreign language.

<em>Let </em>\hat p<em> = sample proportion of Americans who can order a meal in a foreign language</em>

The z-score probability distribution for sample proportion is given by;

          Z = \frac{ \hat p-p}{\sqrt{\frac{\hat p(1-\hat p)}{n} } }  ~ N(0,1)

where, \hat p = sample proportion

p = population proportion of Americans who can order a meal in a foreign language = 0.47

n = sample of Americans = 200

Probability that the proportion of Americans who can order a meal in a foreign language is greater than 0.5 is given by = P( \hat p > 0.50)

  P( \hat p > 0.06) = P( \frac{ \hat p-p}{\sqrt{\frac{\hat p(1-\hat p)}{n} } } > \frac{0.5-0.47}{\sqrt{\frac{0.5(1-0.5)}{200} } } ) = P(Z > 0.85) = 1 - P(Z \leq 0.85)

                                                               = 1 - 0.80234 = <u>0.19766</u>

<em>Now, in the z table the P(Z  </em>\leq <em>x) or P(Z < x) is given. So, the above probability is calculated by looking at the value of x = 0.85 in the z table which has an area of 0.80234.</em>

Therefore, probability that the proportion of Americans who can order a meal in a foreign language is greater than 0.5 is 0.19766.

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Answer:

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Step-by-step explanation:

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