A researcher is examining the effect of wake-up time on alertness. Ten people wake up at 5am on Day 1, and rate how alert they feel from 1 – 10, with 10 being very alert. The next day, they wake up at 10am and rate how alert they feel from 1 – 10. Given the following output, are there significant differences in alertness between a 5am and 10am wake-up? Which test would you be doing?  Group of answer choices One-Sample Z-Test Independent Groups t-test Correlated Groups t-test One-Sample T-Test   What is the null and alternate hypothesis

Q: cenario: Does emotional intelligence vary based on the type of preschool a child attends? A…

A: Between-subjects design is nothing but every member of the sample experiences only one condition and…

Q: A math class got the following scores on a test. What percentage of students received a score of 85…

A: From table Cumulative frequency for score below or 85 is 9 Total students=14

Q: Researchers in a statistics course at a Texas college wanted to investigate the optimism in…

A: Given that, The objective of the research study was to investigate the optimism in receiving a job…

Q: Go to Youtube and search for: We Were There - Polio. You should see a video put out by the CDC.…

A: The study is conducted to study the polio.The random variables under study are the placebo effect…

Q: The following table shows data about heart attack deaths in a certain town over one year.…

A:

Q: An occupational therapist (OT) is comparing two different treatments to see which is more effective…

A: we have two groups one consisting of participants A, B, C, D and the other treatment is on…

Q: For which of the following scenarios would it make sense to perform a test for homogeneity? Select…

A: Homogeneity is an critical characteristic in the sample for many surveys.

Q: A sample 30, 3-5 years old children were asked to count out loud. The highest number of numbers that…

A: Given Information: Consider the given data: Number counted frequency 1 0 2 0 3 0 4 2 5…

Q: Motor Vehicles office tried a new customer service system after people complained they were wasting…

A: Formula Used: Standard deviation σ = ∑F·X2-∑FX2NN

Q: If you wanted to do a Test for Independence on the data, find the E value you use for the following…

A: The E value for the category can be obtained as E = (Row total × Colum total)/Grand total

Q: You want to see if it makes a difference which lane to be in when there is traffic. You randomly…

A: a. The Expected frequencies can be obtained as follows:

Q: Every year, the students at a school are given a musical aptitude test that rates them from 0 (no…

A: Average: Given information: x f x*f 0 1 0 1 3 3 2 5 10 3 0 0 4 4 16 5 3 15     44…

Q: 5. Notice the cluster of several points near the lower left corner of the catterplot. a. What can…

A: 5. a. Based on the scatterplot, it appears that both boys and girls have low interest ratings for…

Q: Every year, the students at a school are given a musical aptitude test that rates them from 0 (no…

A: x(1) Frequency (f)(2) f⋅x(3)=(2)×(1) cf(5) 0 3 0 3 1 5 5 8 2 0 0 8 3 6 18 14 4 4 16 18 5…

Q: A survey asked the following question to random individuals: “How many books have you read in the…

A: Given , the frequency distribution table is , Number of books (X)f0401312163154054We have to…

Q: The Department of Motor Vehicles office tried a new customer service system after people complained…

A: Positively skewed curve means the right end of the curve is more flatter. Otherwise,…

Q: Scenario: Does emotional intelligence vary based on the type of preschool a child attends? A…

A: It is needed to test, whether the emotional intelligence vary based on the type of preschool a child…

Q: In the following situation we want to compare the mean responses in several populations.Are you a…

A: From the provided information, Morning people = 17 Evening people = 35 Number of people who were…

Q: An experimenter investigated the effects of blue light exposure on people’s sleep quality.…

A: In the given research problem, there are two independent samples- Blue light and No Blue light. The…

Q: An educator want to determine whether early exposure to school affect IQ. He enlists the aid of…

A: We set up the, Null Hypothesis(H0):μx=μy , there is no diffrence between the mean IQ of children who…

Q: Zika is a serious and highly contagious virus. The Department of Health keeps records of all…

A: given data   test positive test negative total haszika 8.2% 0.7% 8.9% does not have zika 2.3%…

Q: This frequency table depicts the average hours spent on social media use for students in PSY201…

A: Given,

Q: In the following situation we want to compare the mean responses in several populations.Are you a…

A: Given information- Number of groups (K) = 3 Total sample size, (N) = 111   Calculation of the degree…

Q: A random sample of employees participating in a company fitness program were asked how many days…

A:

Q: A random sample of adults in the US was selected and the following eye colors were observed. Eye…

A: Given , the ; frequency distribution table is ; .Eye colorBlue BrownGreen Hazelother Frequency…

Q: What is the mode for this data set

A: The data that has the highest frequency is called mode. In other words, it is the most frequent…

Q: he relation of math ability to the belief that math ability was innate, the belief was considered…

A: First, we will find the mean and standard deviation fro group that believed that math is NOT…

Q: expensive). The toy was priced the same at all retail stores. Compute the percentage of variance…

A:

Q: f 1 3 N = 11

A: Solution

Q: (b) Draw a side-by-side bar chart to describe the data. I Cell Phone No Cell Phone Trequency 10…

A: Bar chart is used to compare the counts ( frequency) , the means , or other summary statistics using…

Q: The Bureau of Labor Statistics reports that the official unemployment rate for Black people was…

A: Variables are of different types. The correct classification of variables and the identification of…

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.