What is his standard score

Assignment Help Basic Statistics
Reference no: EM13240956

Dr Zak developed a test to measure depression. He sampled 100 university students to take his five item test. The group of students was comprised of 30 men and 70 women. In this group four persons were African American, six persons were Hispanic and one person was Asian. There were five yes/no questions Yes =1 and No =0. The five items are summed giving a total score of 5, where the mean was 3.5 and the standard deviation is .5.

Billy scores a 5, what is his standard score ?

Reference no: EM13240956

Questions Cloud

State the two- tailed test for zero slope : In the following regression, X = total assets ($ billions), Y = total revenue ($ billions), and n = 64 large banks. (a) Write the fitted regression equation.
Explain the millikan experiment using charged oil drops : What sign. info about atomic structure came from the Millikan experiment using charged oil drops
Find the electric potential energy of the system of charges : a point charge q = +87.1 micro coulombs is held fixed at the origin. A second charge, with mass m = 0.0576 kg and charge q = +3.5 micro coulombs, Find the electric potential energy of the system of charges
Statistical analysis and calculations must be shown : A stockbroker at Critical Securities reported that the mean rate of return on a sample of 10 oil stocks was 12.6 percent with a standard deviation of 3.9 percent. The mean rate of return on a sample of 8 utility stocks was 10.9 percent with a standar..
What is his standard score : Dr Zak developed a test to measure depression. He sampled 100 university students to take his five item test. The group of students was comprised of 30 men and 70 women. In this group four persons were African American, six persons were Hispanic and ..
Explain solution of ethylene glycol in water : What is the mass percent of ethylene glycol (C2H6O2) in a solution of ethylene glycol in water that has a freezing point of -15C? (Kf for water is 1.858C/m.)
Find the mass of the entire train : A train has 4 locomotives (73 tons each) and 60 coal cars (42 tons each). The train is going down a 2.4% incline, What is the mass of the entire train
Is the true mean greater than 10 : Faced with rising fax costs, a firm issued a guideline that transmissions of 10 pages or more should be sent by 2-day mail instead. Exceptions are allowed, but they want the average to be 10 or below. The firm examined 35 randomly chosen fax transmis..
Find out value for the ionization energy of hydrogen : The energy for the process (H)+(energy) yields (H+)-(e-) is called the ionization energy of hydrogen. The experimentally determined value for the ionization energy of hydrogen is 1310 kJ/mol. How does this compare to your calculation

Reviews

Write a Review

Basic Statistics Questions & Answers

  Confidence interval-proportion of defective vending machine

Of 346 vending machines tested, 12 are found to be defective. Construct the 98 % confidence interval for the proportion of all defective vending machines.

  What type of error have commited if null hypothesis is false

If you were to accept the null hypothesis, even though the null hypothesis was false, what type of error would you have commited?

  Portion of an electric circuit with three relays

Consider the following portion of an electric circuit with three relays. Current will flow from point A to point B if there is at least one closed path when the relays are activated. The relays may malfunction and not close when activated.

  Evidence of a significant difference

Is there evidence of a significant difference in the proportion who get their news primarily from newspapers between those 36 to 50 years old and those above 50 years old? (use α = 0.05)

  Sampling and hypothesis testing

Why is sampling strategy important? Please provide one or two examples from your work or past experience?

  Are the data consistent with the model

Iindependently of one another. Two hundred seeds of such a cross are raised, and 142 turn out to be blue-flowering. Are the data consistent with the model?

  Probability and z-score based on normal distribution

Assume that x has a normal distribution, with the specified mean and standard deviation. Find the indicated probabilities.

  Estimate marginal and conditional probabilities

What is the probability that a cereal would both high calorie and high fiber? In other words, what is P (high calorie and high fiber)?

  Number of deaths from copd in the group excessive

Suppose that among workers exposed to asbestos in a shipyard in 1980, 33 died over a 10-year period from COPD, whereas only 24 such deaths would be expected based on statewide mortality rates. Is the number of deaths from COPD in this group excess..

  Random variables to measure level of interest

A company is conducting a survey of 235 people to measure the level of interest in a new product. Assume that the probability of a randomly selected person's being "very interested" is 0.88

  Problem related to game of roulette

In the game of roulette, a ball is dropped into a spinning wheel, finally landing on one of the wheel's 38 different slots. The wheel has 18 black slots, 18 red slots, 1 green zero, and 1 green double-zero. Suppose the wheel has landed on red 9 ti..

  Description of relative frequency

A random sample of 346 individuals is selected, and the individuals are classified according to their smoking habits and the smoking habits of their parents. The results are given in the contingency table below.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd