the claim is that the proportion of adults who smoked a cigarette in the past week is less than .30 and the sample statistics include n=1456 with 451 saying that they smoked a cigarette in the past...

the claim is that the proportion of adults who smoked a cigarette in the past week is less than .30 and the sample statistics include n=1456 with 451 saying that they smoked a cigarette in the past...

When starting a survey using male and female participants should the number be equal?

Discuss the following: the population that you are trying to predict, where and how are you selecting your sample, what sampling method would you use, how would you assure that you are selecting a...

Mars inc. claims the 14% of its m&m's are yellow and a sample of 100 is randomly selected. Assume that a procedure yields a binomial distribution. n = 100 and p = .14 .What is the mean and standard...

The probability a person is left-handed is 0.14. In a group of 45 people, what is the probability that exactly five are left-handed? Binomial probabilities?

Assume that adults have IQ scores that are normally distributed with a mean of 105 and a standard deviation 20. Find P 15, which is the IQ score separating the bottom 15% from the top 85%.

which level of measurement is required for the mean?

A set of data has an interquartile range of 20 and a lower quartile range of 6. if the data is symmetrica, what is the value of the median? Please help and explain the outcome..Thanks so much...

A survey of 72 customers was taken at a bookstore regarding the types of books purchased. The survey found that 43 customers purchased mysteries, 33 purchased sciencefiction, 27 purchased romance...

In order to estimate the mean amount of time computer users spend on the internet each month, how many computer users must be surveyed in order to be 90% confident that your sample mean is within...

b) Suppose that you received 5 random cards from a card dealer. You randomly returned 2 cards back to the dealer without looking. What is the probability that two of the five cards that you received...

For a normal shaped distribution with μ = 50 and σ = 8: A. What proportion of the scores fall between 46 and 54? B. For samples of n = 4, what proportion of the sample means fall between 46 and 54...

life style in his 60, 20 years old Insurance, independent. Venn diagram, maybe. Find probability that: ONLY ONE lives to be a certain age BOTH live NEITHER live AT LEAST...

Hi, Ive got 2 sets of data. 181 figures in each. Can I use Pearson's Corrrelation Coefficient to see if there is a correlation between them. And if so what would this mean r = -0.28,...

the numbers I was given was 40 44 35 49 35 43 35 36 39 37 41 41 48 52 37 45 40 36 35 50 42 51 33 34 51 39 I'm a senior this year and I'm trying to graduate with my class because I was...

defective item, 10 item, some are bad, probability without replacement

A group of freshmen at a local university consider joining the equestrian team. Students choose Western riding with probability P = 0.35, dressage with probability P = 0.45, and jumping with probability...

creating a table with a few selected variables within the data set. I have two tables but would like to combine the two. Can that be done

A clinical trial tests a method designed to increase the probability of conceiving a girl. In the study 664 babies were born, and 332 of them were girls. Use the sample data to construct a 99% confidence...

in a test of indigestion tablets, 164 out of a sample of 200 people found out that the tablets were effective. The research team claimed that the tablet was 90% effective. Does the evidence support...

Kirste C.

Experienced Teacher in Statistics with Use of Excel, SPSS and R

New York, NY

5.0
(97 ratings)

Daniel L.

Math, Science, SAT, ACT -- Ivy League Tutor

New York, NY

4.9
(83 ratings)