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777dan777
1 day ago
5

5% of adults participate in at least 30 minutes of exercise each day. How likely is it that a randomly chosen adult will exercis

e 30 minutes each day?
Mathematics
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Alma is estimating the proportion of students in her school district who, in the past month, read at least 1 book. From a random
zzz [12365]

Answer:

0.64 ± 0.1117 or

0.64\pm 1.645*\sqrt{\frac{0.64*(0.36)}{50}}

Step-by-step explanation:

Sample size (n) = 50

Z-score for a 90% confidence level (z) = 1.645

Proportion of students who read at least one book (p):

p=\frac{32}{50}=0.64

The confidence interval is calculated as:

p\pm z*\sqrt{\frac{p*(1-p)}{n} }

By applying the provided information:

0.64\pm 1.645*\sqrt{\frac{0.64*(1-0.64)}{50}}\\ 0.64\pm 0.1117

The confidence interval results in 0.64 ± 0.1117

5 0
3 months ago
A church has 8 bells in its bell tower. Before each church service 5 bells are rung in sequence. No bell is rung more than once.
Inessa [12570]
Utilize the! operation to determine the count of combinations.

8!/5! = 40,320/120 = 336
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3 months ago
Read 2 more answers
Problem 5 (4+4+4=12) We roll two fair 6-sided dice. Each one of the 36 possible outcomes is assumed to be equally likely. 1) Fin
tester [12383]
1 2 3 Step-by-step explanation: Generally, during the roll of two fair 6-sided dice, the doubles result in (1, 1), (2, 2), (3, 3), (4, 4), (5, 5), (6, 6). Therefore, the total for doubles is N = 6. The outcome of rolling two fair 6-sided dice yields n = 36. Thus, the probability of rolling doubles (matching numbers on both dice) is calculated mathematically. When rolling two fair dice, outcomes that sum to 4 or less are (1, 1), (1, 2), (1, 3), (2, 1), (2, 2), (3, 1). Observing this, we see two doubles present. Consequently, the conditional probability of rolling doubles is represented mathematically. Lastly, when rolling the two fair dice, outcomes that show different numbers result in L = 30, while outcomes where at least one die shows a 1 give W = 10. Hence, the conditional probability of having at least one die show a 1 is presented mathematically.
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2 months ago
An equiangular triangle has one side of length six inches. What is the height of the triangle, drawn from that side, to the near
AnnZ [12381]
The height of the triangle measures 5.2 inches. An equiangular triangle has equal measures for all interior angles, which means it is equivalent to an equilateral triangle. Since all angles equal 60 degrees, applying the Pythagorean theorem enables us to calculate the height based on the provided side length.
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2 months ago
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