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Recent questions in Statistics and Probability
High school probabilityAnswered question
floymdiT 2020-10-21Assume that when adults with smartphones are randomly selected, 54% use them in meetings or classes (based on data from an LG Smartphone survey). If 8 adult smartphone users are randomly selected, find the probability that exactly 6 of them use their smartphones in meetings or classes.
High school probabilityAnswered question
Josalynn 2020-10-21A number cube is rolled 20 times and lands on 1 two times and on 5 four times. Find each experimental probability. Then compare the estimated probability to the expected probability.
landing on 5
A number cube is rolled 20 times and lands on 1 two times and on 5 four times. Find each experimental probability. Then compare the estimated probability to the expected probability.
landing on 5
High school statisticsAnswered question
Tammy Todd 2020-10-20The explanatory variable in the given study.
To determine:Whether the given explanatory variable is qualtitative or quantitative.
To determine:Whether the given explanatory variable is qualtitative or quantitative.
High school statisticsAnswered question
e1s2kat26 2020-10-20The two-way table shows the eye color of 200 cats participating in a cat show.
Make a two-way relative frequency table to show the distribution of the data with respect to gender. Round to the nearest tenth of a percent, as needed.
The two-way table shows the eye color of 200 cats participating in a cat show.
Make a two-way relative frequency table to show the distribution of the data with respect to gender. Round to the nearest tenth of a percent, as needed.
High school statisticsAnswered question
naivlingr 2020-10-20Bayes' Theorem is given by
Bayes' Theorem is given by
High school probabilityAnswered question
FobelloE 2020-10-19A manufacturer of digital phones has the following probability distribution for the number of defects per phone:
xf(x) .89 1.07 2.03 3.01
(a) Determine the probability of 2 or more defects. (b) Is a randomly selected phone more likely to have 0 defects or 1 or more defects?
(a) Determine the probability of 2 or more defects. (b) Is a randomly selected phone more likely to have 0 defects or 1 or more defects?
High school statisticsAnswered question
tricotasu 2020-10-18Would you expect distributions of these variables to be uniform, unimodal, or bimodal? Symmetric or skewed? Explain why.
a) The number of speeding tickets each student in the senior class of a college has ever had.
b) Players’ scores (number of strokes) at the U.S. Open golf tournament in a given year.
c) Weights of female babies born in a particular hospital over the course of a year.
d) The length of the average hair on the heads of students in a large class.
a) The number of speeding tickets each student in the senior class of a college has ever had.
b) Players’ scores (number of strokes) at the U.S. Open golf tournament in a given year.
c) Weights of female babies born in a particular hospital over the course of a year.
d) The length of the average hair on the heads of students in a large class.
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