In a medical research class the students were asked to find out the time of their...
In a medical research class the students were asked to find out the time of their birth. of the 38 students in the class, 18 were born between 12 am and 11:59 am. If we pick 5 students at random:
a) create a probability distributions for the number of students born between 12 am and 11:59 am (A) (label columns and rows; use only what you need; show work-some or all)
b) what is the probability of having 2 or 3 students born between 12 am and 11:59 am
c) what is the probability that you will pick at least 2 students born between 12 am and 11:59 am
d) what is the mean of the number of students born between 12 am and 11:59 am
Homework Answers
Add Answer to:
In a medical research class the students were asked to find out
the time of their...
Students in an introductory statistics class were asked to report the age of their mothers when...
Students in an introductory statistics class were asked to report the age of their mothers when they were born. Summary statistics include Sample size: 28 students Sample mean: 29.643 years Sample standard deviation: 4.564 years a. Calculate the standard error of this sample mean. b. Determine and interpret a 90% confidence interval for the mother’s mean age (at student’s birth) in the population of all students at this university. c. How would a 99% confidence interval compare to the 90%...
Students in an introductory statistics class were asked to report the age of their mothers when...
Students in an introductory statistics class were asked to report the age of their mothers when they were born. Summary statistics include Sample size: 28 students Sample mean: 29.643 years Sample standard deviation: 4.564 years a. Calculate the standard error of this sample mean. b. Determine and interpret a 90% confidence interval for the mother’s mean age (at student’s birth) in the population of all students at this university. c. How would a 99% confidence interval compare to the 90%...
12. Adults and high school students were asked four trivia questions. The number of correct answers...
12. Adults and high school students were asked four trivia questions. The number of correct answers given by each participant was recorded. To the right is a table showing the results. Complete parts a) through e). 0 1 2 3 4 Total Adults 10 27 48 45 38 168 Students 40 12 11 55 47 165 Total 50 39 59 100 85 333 A) If we select a participant at random, what's the probability we choose an adult who...
Based on previous research, an academic advisor predicted that tardiness would decrease if students were asked...
Based on previous research, an academic advisor predicted that tardiness would decrease if students were asked to text their academic counselor as soon as they got to class. A sample of 25 students was selected for the study, and their attendance was monitored for 6 weeks. For the first 3 weeks, the students were asked to text as soon as they got to class. The next 3 weeks, students no longer needed to text. The table shows how many minutes...
Find the probability that in a class of 35 students exactly 3 were born in each...
Find the probability that in a class of 35 students exactly 3 were born in each of the seven days of the week. Assume that there is no relation between birthday and day of the week.
Thirty undergraduate students were recruited for a research project in a psychology class. The students were...
Thirty undergraduate students were recruited for a research project in a psychology class. The students were randomly assigned to two different groups: Group A saw a moving fictional movie dealing with the death of a young man in battle. Group B saw a documentary on the war in Iraq, including the numbers of soldier killed or wounded. Empathy was then measured with the Interpersonal Empathy Test which had 25 questions scaled from 1 to 4. Thus test scores could range...
Hypothesis Test. Students in a statistics class were asked, "With whom do you find it easier...
Hypothesis Test. Students in a statistics class were asked, "With whom do you find it easier to make friends?" The options were "Same Sex," Opposite Sex," and "No Difference." Do females find it easier to make friends with the opposite sex than males do? Test at the 05 level. Of 68 recently surveyed males, 15 answered "Opposite Sex Of 137 females, 58 answered Opposite Sex." Question: What is the correct statistical procedure? 1-proportion z test 1-proportion z-interval 2.proportion z test...
I will rate and comment, please answer all questions below A survey of students in a...
I will rate and comment, please answer all questions below A survey of students in a large intro to Statistics class asked about their birth order (1 = oldest or only child) and which course of study at the university they were enrolled in. Suppose we select a student at random from this class. 1 or Only 2 or more Total English 37 23 60 Science and Engineering 52 41 93 Nursing 29 ...
Randomly selected students in a statistics class were asked to report the number of hours they...
Randomly selected students in a statistics class were asked to report the number of hours they slept on weeknights and on weekends. At α = 0.05, the experimenter wants to know if there is sufficient evidence that there is a difference in the mean number of hours slept. Student 1 2 3 4 5 6 7 8 Hours Sun-Thurs 8 5.5 7.5 8 7 6 6 8 Hours Fri-Sat 4 7 10.5 12 11 9 6 9 a. State the hypotheses and identify the claim. b. A student calculates the test statistic using this formula: Is this the correct formula to use for this situation? (Hint:...
Help me out Question 4 In a national survey, college students were asked, "How often do...
Help me out Question 4 In a national survey, college students were asked, "How often do you were a seat belt when riding in a car?" The response frequencies appear in the table below. What is the probability that a survey participant does NOT always wear a seat belt when riding in a car? Response Frequency Never 115 Rarely 335 Sometimes 550 Most of the Time 1100 Always 2900 Question 4 options: a) 0.58 b) 0.71 c) 0.42 d) 0.29...
Hypothesis Test. Students in a statistics class were asked, "With whom do you find it easier to make friends?" The options were "Same Sex," Opposite Sex," and "No Difference." Do females find it easier to make friends with the opposite sex than males do? Test at the 05 level. Of 68 recently surveyed males, 15 answered "Opposite Sex Of 137 females, 58 answered Opposite Sex." Question: What is the correct statistical procedure? 1-proportion z test 1-proportion z-interval 2.proportion z test...
Most questions answered within 3 hours.
-
Calculate the volume integral of the function T=z^2 over the
tetrahedron with corners (0,0,0), (1,0,0), (0,1,0),...
asked 56 minutes ago -
I propose to you a game. You roll 2 dice. If the sum of the
numbers...
asked 1 hour ago -
Select the most likely lattice types for each of the following
salts: (a) BeF2; (b) CaO;...
asked 1 hour ago -
a
ball is thrown downward with velocity of 10m/s. calculate the final
velocity if it reaches...
asked 2 hours ago -
How many grams of ice at -15°C must be added to 705 grams of
water that...
asked 4 hours ago -
2. Balance sheet
The balance sheet provides a snapshot of the financial condition
of a company....
asked 4 hours ago -
In week 1 of the chemical equilibrium experiment, you and your
lab team will create a...
asked 4 hours ago -
Identify and describe five (5) characteristics of a good KM
measurement system. Be sure to include...
asked 4 hours ago -
What are at least five (5) workplace wellness best practices for
a successful wellness program? Explain...
asked 4 hours ago -
A pharmaceutical company is testing a new drug. Of the 110
people that received the drug,...
asked 5 hours ago -
Which of the following is NOT a mechanism for gene
regulation?
a. Phase variation in DNA....
asked 5 hours ago -
Which of the following is being applied when, under certain
conditions, the value recorded for an...
asked 5 hours ago