Answer:
45 girls
Step-by-step explanation:
The ratio of girls to boys is 3:5
There are 120 children altogether
The number of girls is;
× 120 = 45 girls
30 newspapers/2 piles = 15 newspapers/1 pile
It’s just reducing 30/2 into a fraction with a denominator of 1.
15 tickets are yours.
250 * .06 = 15
You move the decimal point 2 places to the left because .6 is 60% instead of 6%
Answer:
(0.46, 0.52)
Step-by-step explanation:
The formula for Confidence Interval with Proportion
CI = p ± z × √p(1 - p)/n
Where
p = Proportion = x/n
x = 346
n = 706
p = 346/706
p = 0.49
z = z score of Confidence Interval 90% = 1.645
Therefore:
CI = 0.49 ± 1.645 × √0.49(1 - 0.49)/706
CI = 0.49 ± 1.645 × √0.49 × 0.51/706
CI = 0.49 ± 1.645 × 0.0188139843
CI = 0.49 ± 0.0309490042
Hence:
Confidence Interval is
0.49 - 0.0309490042
= 0.4590509958
≈ 0.46
0.49 + 0.0309490042
= 0.5209490042
≈ 0.52
Therefore , the confidence interval of the population proportion is
(0.46, 0.52)
Answer:
D. About $10
Step-by-step explanation:
To find unit price, you divide the total price by how much you're buying.
For example - $56 divided by 6.2 pounds of pecans is 9.032258064516129032258064516129 which can be rounded up to about $10
