Scenario: Terry Teacher suspects that kindergarten class sizes in Alameda county are larger than average. According to the California Department of Education, the average kindergarten class size in California is 21.9. For a random sample of 36 Alameda County kindergarten classes, the average class size was 23 with a standard deviation of two. Run a test to assess Terry Teacher's hypothesis at the a=.05 level. Question: In symbols, the null hypothesis for this test would be: H # 23 H = 23

Q: A survey of 100 doctors revealed that 2 out of every 5 doctors recommended Brand M deodorant. Based…

A:

Q: A building manager in interested in installing a sprinkler system that is designed to go off in the…

A: let us first understand what is type I error and type II error: type I error is the rejecting null…

Q: What test would be used, and what is the result of the test? Σ n=1yn" 1

A:

Q: d. P(ACU D) = e. P(ANBN D) f. P((ACn D) U B) = g. P((BUD)C n D) h. P((ACn D)C U D) =

A: Hi, thanks for the question. Since there are multiple subparts posted in the question, we will…

Q: Bob is doing a one tailed Z test. What are the degrees of freedom for the test, if he had 50…

A: We have given that  One tailed test.  Test statistic z and sample size n=50

Q: The following data shows the probabilities for the number of cars sold in a day at a car dealer…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a…

Q: A survey typically records many variables of interest to the researchers involved. Below are some of…

A: A survey typically records many variables of interest to the researchers involved. Below are some of…

Q: Gender Back Pain Back Pain No Total Yes Female 28 35 63 Male 18 19 37 Total 46 54 100

A:

Q: 1. In a certain barangay, 500 random residents are chosen in which 225 are males. At a = 0.01, test…

A: Given : Sample size of residents  (n) = 500 Let X :  No. of male residents From sample ; X = 225…

Q: For each situation below, state the explanatory variable and the response variable. a.) Can you…

A: Solution:-a.) In this scenario, the explanatory variable is the shoe size, which is used to predict…

Q: People were given three choices of solt drinks and asked to choose one favorite The tolowing table…

A:

Q: The accompanying table describes results from groups of 8 births from 8 different sets of parents.…

A: Note: Hi there! Thank you for posting the question. As there are multiple sub parts, according to…

Q: Which of the following is the sample space for the experiment in which two coins are tossed? a.) 4…

A: Given: Two coins are tossed. Outcomes for tossing a coin is Head and Tail. The sample space for…

Q: A spinner marked off in four equal-sized regions, numbered 1, 2, 3, and 4, is spun twice. Let the…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: Problem: In a game of Cara y Cruz, a player flips a coin and bets on whether it will land on heads…

A: In a game of Cara y Cruz, a player flips a coin and bets on whether it will land on heads or tails.…

Q: Two hundred math teachers were given a survey that asked two questions:  1. Do you own a…

A: Let , M=a student owned a motorcycleC =a student owned a…

Q: Valeria thinks that she has a special relationship with the number 5. In particular, Valeria thinks…

A: a) Assume that p is the true proportion of getting the number 5 while rolling a die.

Q: Giving a test to a group of students, the grades and gender are summarized belov A Total Male 14 28…

A: Solution: The given table of data is

Q: The chance of rain is 20%, the chance of it being sunny is 60%, and the chance of it being sunny and…

A: P(rain)=20% = 0.20P(sunny)=60% = 0.60P(rain and sunny)=10%=0.10

Q: For which of the following cases would a t test be appropriate? A) Compare a hockey player’s…

A: Objective of this question is that which option is the correct choice.

Q: On a multiple choice quiz in which each question has four possible answers, the probability of…

A: probability mass function of B.D is = f ( k ) = ( n  k ) p^k * ( 1- p) ^ n-kwhere       k = number…

Q: Let S be a sample space. Suppose A and B are two independent events on S. Show that the events A°…

A:

Q: Edvard has to take a seven-question multiple-choice quiz in his sociology class. Each question has…

A: n = 7 (as per question) p (correct answer) = p = 14 = 0.25 q = 1 - p = 1 - 0.25 = 0.75 X = No. of…

Q: If P(A) = 0.80, P(A or B) = 0.70, and P(A and B) = 0.60, then P(B) O a. 0.10 O b. 0.50 OC. 0.26…

A:

Q: d. What are the observed minus expected counts? e. What is the test statistic? How many degrees of…

A: The 2×2 contingency table is given as follows.   Red Yellow Green  Blue Row total Introvert 10…

Q: Which of the following statements is appropriate for the following simulation: A student simulates…

A: The math test scores are simulated by choosing random number between 0 and 100. So, the simulated…

Q: for the t test, one uses instead of O.

A: In this case, we need to identify the suitable answer for the given question.

Q: Write the capital letter to the correct answer. For example, if the answer is σ write J Which of…

A:

Q: QUESTION 17 Kappa Sigma fraternity at Ohio is selling raffle tickets to raise money for a local…

A: Grand prize=$1000 As there is only one Grand prize P(Grand Prize)=1/500   2nd Place=$100 As there is…

Q: Moe's Original Barbecue is interested in whether customers are tipping less than they were last…

A: Solution: From the given information, the average per check is $5.

Q: Illustration 16.36. An urn contain 9 balls, two of which are white, three blue and four black. Three…

A:

Q: Residents in a city are charged for water usage every three months. The water bill is computed from…

A: INTRODUCTION :   HISTOGRAM: The Histogram is often useful to represent a frequency distribution…

Q: A six sided number cube has one number, from 1 through 6, on each cube. Determine the probability of…

A: Given Data: n(S)=6   Let A be the event of getting an even number A={ 2, 4, 6 } n(A)=3

Q: iven forecast errors of -5, -10, and +15, the MAPE is: Othere isn't enough data to calculate this…

A: Given Given forecast errors of -5, -10, and +15,

Q: Carrie noticed that her menstrual cycle was late and had a feeling that she is pregnant. She decided…

A: Given information- Carrie noticed that her menstrual cycle was late and had a feeling that she is…

Q: A) ? B)? C) ?

A: A) The probability of winning the first prize with your third purchase is, Thus, the probability of…

Q: s achieving a basic skill level related to the location of the school? The results of a random…

A: a. Null Hypothesis: H0: The categories of subject and location are not related. Alternative…

Q: 11. A student organization is trying to decide whether or not to offer more movies on campus. They…

A: 11. We are here to determine if the random sample of 1000 students are in favour of more movies on…

Q: A problem with polling is whether or not people are willing to answer honestly. If a question might…

A: Given that - A problem with polling is whether or not people are willing to answer honestly. If a…

Q: If you are running a single sample t-test and have an N of 65. What do you know? A) df = 64 B)…

A: If we are running a single sample t-test and we have n = 65 then, we know- A) df = 64

Q: A student does a survey to see if the proportions of men and women who plan to get a degree in a…

A: A student does a survey to see if the proportions of men and women who plan to get a degree in a…

Q: --) If diet and cholesterol level are lependent, which of the following would u expect to be true in…

A: If diet and chorestrol level are independent which of the following would you expect to be true in…

Q: d) Probability of poor academic performance (<70%) among the students who had inadequate sleep?…

A:

Q: Many students at popular school in Timbuktu have been complaining that there seems to be some level…

A: Variables are classified into two types they are discrete or continuous variable. It can also…

Q: A ping pong ball is drawn at random from an urn consisting of balls numbered 4 through 9. A player…

A: a) An urn consists balls numbered 4 through 9. That is there are 6 balls in the urn. The probability…

Q: same 1000 people were asked if they favored playing video games in 2000 and in 2010. The initial…

A: It is given asClaim: The people change their opinion about video games in the United States in the…

Q: le? A. lm() B. boxplot() C. hist()

A: Categorical variables can be classified into two or more categories or distinct groups. For example,…