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in school, there are total number 600 people, 200 people are teacher. out of 600 people, 70% are female. 40% student take only English, 30% student take only Chinese, 30 % student take only Maths.it is found that both male n female has the equal chance to wear spectacles. Draw a tree diagram.
If 4.01% of these DVD players have a life span of more than 8 years, what is the standard deviation of the DVD player's life span?
Create a histogram over five class intervals.
Use normal approximation to determine probability that x = 2. Illustrate all work.
The Daytona Beach Tourism Commission is interested in the average amount of money a typical college student spends per day during Spring Break.
The proportion of people aged 18-25 who currently use illicit drugs is equal to 0.20 (or 20%). Now, express the null hypothesis H0 and alternative hypothesis H1 in symbolic form.
Compute the Pearson correlation. Multiply each X value by 2 and compute the Pearson correlation for the modified scores.
What is the probability that an individual shopper spends between $17.25 and $21.60 on impulse buys?
What percentage of the bank's customers carries average daily balances below of $200? What percentage of the bank's customers carries average daily balances between $300 and $700?
Choose any Markov Chain with a 3x3 transition matrix that is irreducible and aperiodic. The reason it needs to be irreducible and aperiodic is because we are looking for a Markov Chain that converges.
The number of lightning strikes in a year at the top of a particular mountain has a Poisson distribution with a mean of 4.2. Find the probability that in a randomly selected year, the number of lightning strikes is 0.
Show that there is no rational number b/a whose square is 2, as follows: if b^2 = 2a^2, then b is even, so b = 2c, so, substituting and cancelling 2, 2c^2 = a^2.
Determine how large a sample should be taken to be 90% confident that the sample mean is within 0.12 ounces of the true mean weight of our bakery's loaves.
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