188 Answered Questions for the topic Stats

09/05/19

What statistical test would i ask

I will do a test to see if those with higher rebellious scores are more likely to have a higher level of aggression.(correlation?????????)
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09/05/19

What statistical test should i use

i will do a test to compare gender results to the parental rejection scale One round for mother another round for father
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08/01/19

Help with false positives
A drug testing company advertises a test for steroids that is 93.5% effective at detecting steroid use. It has a true negative effectiveness of 93.5%. Suppose 8% of 10,000 professional cyclists are... more
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05/19/19

question about chances
If i enter a contest 27 times with a 1% chance of winning each time what is the % chance of winning overall. If possible can you explain how to calculate the answer?
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05/06/19

math question i need help with TODAY 5.6 please!

1)     The table below shows the income for an employee over his first 8 years of work. Use this to estimate his income for his 15th year of... more
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05/05/19

Stats binomial probability holiday lights
A holiday light string has 27 lights, and a whole string fails if and only if one or more of its own individual lights fail. Each single light has an independent 2.7% chance of failure during any... more
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02/13/19

Calculate the sample standard deviation and Sample variance for the following frequency distrb if necessary round to one more decimal place than the largest number of dec places given in the data.
Data:61-66 1167-72 473-78 879-84 1185-90 4
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10/09/18

The null hypothesis is the opposite hypothesis to the scientific or alternative hypothesis.
True or false I know the null hypothesis is the opposite of the alternative but Not certain for the scientific hypothesis
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10/09/18

The null hypothesis is the opposite hypothesis to the scientific or alternative hypothesis.
True or false I know the null hypothesis is the opposite of the alternative but Not certain for the scientific hypothesis
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10/02/18

A disadvantage of cluster sampling is that a portion of the population may be missed in the sample
True or false
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09/23/18

A card is chosen at random from a pack of 52 playing cards. What is the probability of a King or a Queen?
Determine whether the following experiments are mutually exclusive (do they overlap) and then determine the probability of the event occurring?
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08/06/18

A numerical value describing and measuring characteristics of a relationship between variables is a correlation.
A numerical value describing and measuring characteristics of a relationship between variables is a correlation. List and describe these characteristics (there are three). Lastly, give an example... more
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08/06/18

At one hospital, 674 women were diagnosed with breast cancer. Five years later, 88% of the Caucasian women and 83% of the African American women were still aliv
  Here are the choices I: Income II: Neighborhood where patient lives III: Quality of health care IV: Diet V: Number of years surviving since diagnosis II, IV I, III, IV I, II I, II, III,... more
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08/06/18

Olympic Round Robin
You are setting up an Olympic Games round robin tournament. There are 8 teams and 7 events, and each team has to play every game once and every team once. What are the match ups?
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07/15/18

Find the area of the indicated region under the standard normal curve. The area between zequals0 and zequals1 under the standard normal curve is nothing.
The area between zequals0 and zequals1 under the standard normal curve is nothing.
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07/02/18

Help with STATS
Assume that random guesses are made for 7 multiple-choice questions on a test with 2 choices for each question, so that there are nequals7 trials, each with probability of success (correct) given... more
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07/01/18

can You help me
2. The mean consumption of fruit three years ago was 98.9 pounds. A dietician believes that fruit consumption has fallen since then.a. Write out the hypothesis.b. In the context of this question,... more
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06/14/18

Finding the mean score
Scores for a common standardized college aptitude test are normally distributed with a mean of 503 and a standard deviation of 103. Randomly selected men are given a Test Preparation Course before... more
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06/06/18

what is the test statistic
The claim is that the proportion of adults who smoked a cigarette in the past week is less than 0.35, and the sample statistics include nequals=1621 subjects with 551 saying that they smoked a... more
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05/30/18

Researchers are interested in understanding whether adolescents’ frequency of social media
Researchers are interested in understanding whether adolescents’ frequency of social media use along with the amount of sleep they get at night predict how engaged they are in school. They... more
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05/03/18

If i Roll a 20 sided die 8 times, what are the odds I get a 19 or 20 at least once?
Building a character in d20 and im looking at stats
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05/01/18

Express your answser as a fraction or a decimal number rounded to four decimal places
Two cards are drawn with replacement from a standard deck. What is the probability that the first card will be a diamond and the second card will be a face card?
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04/26/18

Find the Z-score such that the area under the standard normal curve to the left is .52
college math 1110 elementary stats
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03/29/18

Find the value of the test statistic
I would really appreciate the help guys. Thanks again !   1)the claim is that the proportion of peas with yellow pods is equal to 0.25 the sample statistics from one experiment include 560 peas... more
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03/02/18

if you have the numbers 1,1,2,3,4,6,8, how many odd numbers over 5,000,000 can you make?
Stats question, i thought it was 120 because there would only be 2 ways to make an odd number but some people told me that since there are 2 ones then it would be x3 at the end to make 180. i think... more
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