If Gena's score is 85, the class average is 82, and the SD is 4, what is Gena's Z-score?

Q: If there were 760 students in Jamal’s class, approximately how many students scored higher than…

A: The probability that z-score is greater than 1.41 is calculated as follows: PZ>1.41=1-PZ≤1.41…

Q: Find the raw score which corresponds to z=1.6?

A:

Q: ) Danny has scored 78, 74, and 72 on the first three exams in his math class. If the standard…

A: Calculate total marks obtained in 3 exam

Q: The manager wants to rank the five employees based on performance with number of errors weighted…

A: Note: As per the guidelines, in case of multiple questions, answer to the first question will be…

Q: Use the following scores to find the value of EX-2 = 3 4 2

A: GivenX=3,2,4,2

Q: The percentage of hands that are winning blackjack hands is enter your response here​%

A: Since we have calculated probability of selecting a black jack hand is P(Black Jack hand) = 64/1326…

Q: In our Brockport sample of college students, the greatest number of weekend drinks observed was 6.00…

A: Z score for 6 weekend drinks is,

Q: Here are several z-scores.  Which person was closest to average? Ahab: Z = +1.2 Brianna: Z = -0.8…

A: Given z scores: Ahab: Z = +1.2 Brianna: Z = -0.8 Cecilia: Z = -1.4 Darnell: Z = +0.7 Evelyn: Z =…

Q: What is the z-score of x, when x = 11 and X ~ N(8,1)? (round to nearest hundredth) If your answer…

A: Introduction: Consider X as a normally distributed random variable, with mean μ and standard…

Q: On a psychology exam with a µ = 76 and σ = 12,  Tom scores at the mean,  Mary had a score of X =…

A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean…

Q: Dorothy Little purchased a mailing list of 2,000 names and addresses for her mail order business,…

A: From the provided information, the probability that the names list is non authentic, is 40%. That is…

Q: What is the range of Joey’s first 14 quiz grades? What is the range of Joey’s quiz grades after his…

A: a) Range of first 14 quiz Lowest value=74 Highest value=98   Range=Highest value-Lowest Value…

Q: Compute for the x-scores of the following: z = -0.45, μ = 78.30, and σ = 16

A:

Q: On a psychology exam with µ = 76 and o = 12, Tom scored 9 points below the mean (M), Mary %3D had a…

A: Given, On a psychology exam with μ =76 and σ=12, Tom scored 9 points below the mean(M), Mary had a…

Q: A man has an adopted grandson. After examining him at his 2-year checkup, the boy's pediatrician…

A: For a variable, X~N(μ,σ2), the z-score is, Z=X-μσwhereμ=population meanσ=population standard…

Q: Explain the reasons why we might have positive, negative z_scores? When is the z_ score equal 0

A:

Q: Travis took the ACT (μ=19.50,σ=7) and recieved a percentile of 67. What was his z score? What was…

A: you had not provided distribution of sat score so we can not find answer of c.

Q: In a study, the rate of success of initial vaccination among 330 subjects receiving the 1:10…

A: Given: Sample size of subjects (n) = 330 Sample proportion or success rate p^=0.971 Hypothesized…

Q: An industrial/organizational psychologist wants to improve worker productivity for a client firm,…

A:

Q: A sample of n equals 20 scores is transformed into z-scores what is the meaning for the set of 20…

A:

Q: he margin of error for a 90% CI for a mean, when the sample size is 12, the sample average is 52,…

A: As the population standard deviation is known, we will use t distribution. Degrees of freedom =…

Q: Use the following scores to find the value of Ex= 3 4 2. 2.

A: Given: x 3 2 4 2

Q: The predicted college GPA for a high school GPA of 3.8 and a college board score of 500 is (Round to…

A: The equation of the college GPA is y^=0.16+0.51x1+0.002x2. The variable x1 is defined as the high…

Q: What does it mean to say the race was too close to call?

A: Here Given  Proportion vote A would receive = PA=0.46 Proportion vote B would receive=PB=0.44…

Q: How would you interpret a z score of ‐3.0?

A: To finde z score we need mean (mu) and standard deviation (sigma) of the sample. We Calculate z…

Q: Last week Andi had exams in Chemistry and in Spanish. On the chemistry exam, the mean was u = 30…

A: To solve the above question, we use the z score formula Andy took two Exams, Chemistry and Spanish.…

Q: 5. For the following scores, Y 4 compatational 1 confuse the 1 4 nor

A: Given the following scores, X Y 4 0 1 5 1 0 4 5   (a) To sketch a scatter plot and…

Q: If there were 500 students in Jamal’s class, approximately how many students scored higher than…

A:

Q: What is the value of ΣX2 for the scores 2, 4, and 5?

A: The scores are given as 2, 4, and 5.

Q: If the average of z and 5z is 30, what is the value of a?

A: Given that avarage value of z and 5z is 30.

Q: Mr. White collected data from his eighth grade class on whether they prefer the zoo or the museum.…

A:

Q: To assess the quality of recent research, which of the following question can be asked?

A: Need to check the quality of the research. Time and money are the factors which are important in…

Q: Con side that the ten Percent of indlividuals getting tested for the Virus, have the Virus. Now…

A: Let A be the event denoteds the person having virus and B be the event denote the event the person…

Q: In many states, a 17% risk of a car accident with a blood alcohol concentration of 0.08 is the…

A: Since, it is given that in many states, a 17% risk of a car accident with ablood alcohol…

Q: To get a grade of C + , a student must have a mean average of 77 or greater. Jim has a mean average…

A: Jim has mean average of 76 for 10 quizzes. i.e. Jim has scored total of 76×10=760, combining all 10…

Q: Why does the use of multiple t tests increases?

A: The multiple t-tests are defined for a one-sample multivariate test and as well as for two samples.…

Q: If CV for an English Test is 62.5% and the CV for a History test is 62.5% , Compare the variation of…

A:

Q: What proportion of the population score above an 18 on the ACT? What proportion of students score…

A: Given: Let X denote the SAT score thus, X~ N(500, 1002) Let Y denote the ACT score thus, Y~ N(20,…

Q: A study is to be conducted in a hospital to determine the attitudes of nurses toward various…

A:

Q: What is the value of SS for this sample?

A: Given: n = 4  Σ X = 4 Σ X 2 = 32 The formula to calculate the SS is as follows:

Q: A student does a survey to see if the average GPAs of male and female undergraduates at her…

A: We have given that  the average GPAs of male and female undergraduates at her university are…

Q: A set of n = 10 pairs of scores has ΣX = 20, ΣY = 30, and ΣXY = 74. What is the value of SP for…

A: It is given that ΣX = 20, ΣY = 30, and ΣXY = 74.

Q: Sean also took the SAT (μ=1010,σ=200) and had a z score of +0.25. What was his SAT raw score? What…

A: Given data, μ=1010 σ=200 z-score=0.25

Q: A researcher wants to test whether UBC students are more intelligent than the general population. He…

A: Given: population mean (μ)=100population standard deviation (σ)=15sample size (n)=36Sample mean…

Q: The claim is that for 12 AM body temperatures, the mean is > 98.6F. The sample size is n=6 and the…

A: Given: μ = >98 n = 6 test statistic = 1.929

Q: A nursing school professor is interested in determining how her college students compare to the…

A: Let X denote the exam score, then assuming that X is normally distributed with mean, µ = 100 and a…

Q: Use the following scores to find the value of (Ex)² = %3D 4 3. 2.

A: