A researcher wanted to determine if carpeted rooms contain more bacteria than uncarpeted rooms. The table shows the results for the number of bacteria per cubic foot for both types of rooms. Carpeted: 15...
A researcher wanted to determine if carpeted rooms contain more bacteria than uncarpeted rooms. The table shows the results for the number of bacteria per cubic foot for both types of rooms. Carpeted: 15...
100 people in New York and 100 people from Chicago, were each asked "do you like your own cities style of pizza better than the other one?" The number of people that said yes in new...
Q1 A liquid phase reaction: A → 2R was performed in two different reactors and the following results were obtained in repeated experiments: Reactor 1: Conversion of A (in %): 57.2, 53...
For their class project, a group of statistics students decide to survey the student body to assess opinions about the proposed new student center. Their sample of 200 contained 50 first-year students,...
A researcher is interested in increasing feelings of self-confidence in adolescents. He randomly selects 100 adolescents from the population and randomly assigns 50 individuals to a treatment program...
A population is normally distributed with μ = 50, σ = 8, N = 52. Answer the following questions based on this information. (show all work) a. The mean of the distribution of means is ______...
Choose one of the following: A) 15 B) 14 C) 4 D) 3
Choose one of the following: A) the less likely an observed difference is due to chance B) the more likely an observed difference is due to chance C) the larger the sum of squares...
What percent of the eruptions last longer than 2.3 minutes?
The mean test score was 850 with a standard deviation of 100. What porportion of students had a higher score than Vivian? (Assume that test scores are normally distributed.)
How would I go about answering these questions? Also, how do you differentiate between solving them as a dependent or an independent event? Let P(A) = .3, P(B) = .4 and P( A ∪ B...
With a distribution of 10 scores, nine of them are 3, 5, 9, 1, 9, 2, 0, 3, and 9. The last one is greater than 5 but it is not 9. Is it possible to determine the mean of the distribution?
The computed test statistic (rounded to two decimal places) for a claim about a population proportion given x = 12, n = 25, p = 0.35, assuming a normal distribution is 1.86.
(rounded to two decimal places) for (α )alpha = 0.02, assuming a normal population is 2.05.
What is your conclusion for the following claim: Claim: p = 0.34, P-value = 0.014, and α (alpha) = 0.05. A. there is not enough information to draw a conclusion B...
For the following statement, express the claim in symbolic form (null and alternative hypotheses): At least half the students at this school carpool to campus. Ho:...
At least half the students at this school carpool to campus. Ho: p = 0.50 and H1: p > 0.50 Ho: p ≠ 0.50 and H1 : p = 0.50 Ho: p > 0.50...
The probability that a radish seed will germinate is 0.7. A gardener plants seeds in batches of 17. Find the standard deviation for the number of seeds germinating in each batch.
The defense attorney claims that this is evidence that the jury pool was not selected randomly. Use the binomial distribution to evaluate the defense attorney’s claim of bias. Make sure that you...
Find the percentile for the data value. Data set: 55, 38, 30, 66, 67, 68, 44data value: 55