is supposed to have 20% Seniors. We currently have 1200 The population of students at OHS. (What is the expected number of seniors? What is 20% of 1200?) There are currently 268 seniors. What is the chi-square test statistic for this class?

Q: How do your empirical results from 50 times compare to the theoretical probability? Frequency table…

A: Given: A coin is tossed 50 times, we get heads 25 times and tails 25 times. Empirical probability is…

Q: (a) Which of the following must be true about Deshaun's score? Deshaun scored higher than about 68%…

A: It is given that  Deshaun’s percentile = 32nd Susan’s percentile = 66th

Q: You read in a book on baseball that your favorite player gets on base 41% of the time he goes to bat…

A: The player gets on base 41% of the time he goes to bat.

Q: If there is a chance of rain of 10% on any day, how do I find the chance that it rains on Saturday…

A: P(A or B) means P(A∩B)P(A & B) means P(A∪B)P(A∩B)=P(A)+P(B)-P(A∪B)

Q: You have 10 women who are pregnant. They all took a home pregnancy test that claims to accurately…

A: we will find the required.

Q: Consider a computer test to indicate if you like Math 123 or dislike Math 123. If positive, you like…

A: Given information: P(Like) = 0.80 P(Dislike) = 0.20 PPositiveLike=0.855 PNegativeDislike=0.855…

Q: ccording to the pew research Center 42% of Americans so that they are spending less money than usual…

A: p =0.42 n = 1000

Q: An unfair coin is tossed 14 times.  This coin is known to come up heads 60% of the time and tails…

A: Here, n = 14, p = 0.40, q = 0.60.

Q: Translate Every year, the students ata school are given a musical aptitude test that rates them from…

A: Calculation: The Mean aptitude score is,

Q: A fair coin is tossed 30 times.  How likely are you to see exactly 15 heads?  Round to four decimal…

A: given data, a fair coin is tossed 30 times n=30…

Q: The probability that the wait time in a doctors office is at most 20 minutes is 27% how many…

A:

Q: 3. A die was rolled 50 times. Here are the results: Roll Value vs. Frequency 2. 3 Roll Value a)…

A: a) In experiment of rolling die 50 times 5 was rolled 9 times. Therefore,  P(rolling a 5)  = 9/50 =…

Q: what are the odds against the paper for having the letter M written on it State your answer as a…

A: HERE from given information  All 11 letters from the word Mississippi are written on individual…

Q: With a sorted list of elements: 1, 2, 3, 4, 5, 7, 8, 9 what is the probability of comparing…

A: Given elements 1,2,3,4,5,7,8,9 For index X = 2 we have sorted elements from given data i.e., 4 and 9…

Q: You are testing the claim that the proportion of men who own cats is significantly different than…

A: Denote p1 is true proportion of male who won cat and p2 is the true proportions female who won cat…

Q: If the probability of a defective light bulb is 0.01, to be 92.5 % confident, up to how many…

A: Given information: PDefective=0.01, n=40

Q: What is the power of a test?

A: Power of test is the probability of rejecting the null hypothesis when it is false. Therefore, the…

Q: On a test, John scored at the 50th percentile and Jim scored at the 25th percentile; therefore,…

A: A percentile indicates a score's position in relation to those other values from the same dataset.…

Q: Recent polls indicate that if a federal election would be held today, 35% of Canadian voters would…

A: Given:p = population proportion = 35% or 0.35 n = 441Note:The sampling distribution of the…

Q: 65% of the people in Missouri pass the driver's test on the first attempt. A group of 7 people took…

A: Introduction:If X ~ Bin (n, p), then the probability mass function of X is:p (x) = (nCx) px (1 – p)n…

Q: A researcher wishes to demonstrate that the mean income of American families with 4 members is now…

A: We always put the no difference under null hypothesis

Q: An LED lightbulb manufacturer produces lights with a mean lifespan of 10,000 hours and a standard…

A: the PDF of normal distribution is = 1/σ * √2π * e ^ -(x-u)^2/ 2σ^2standard normal distribution is a…

Q: You are testing the claim that the proportion of men who own cats is significantly different than…

A:

Q: When making random guesses on an 8 question quiz the probability of guessing correctly on any one…

A:

Q: (a) Which of the following must be true about Amanda's and John's scores? Amanda scored higher than…

A:

Q: Sean is the star shortstop for his baseball team. He notices that his team typically scores about…

A:

Q: You want to do a simulation where 10% are left handed, 89% are right handed, and 1% are…

A: It is given that one want to do a simulation where 10% are left-handed, 89% are right-handed, and 1%…

Q: The probability is 0.309that the gestation period of a woman will exceed 9 months. In 3000human…

A: Given data The probability is 0.309 that the gestation period of woman will exceed 9 months

Q: How do we calculate p?

A: Introduction: P-value: The P-value is the probability of obtaining a test statistic value as extreme…

Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.