275 Answered Questions for the topic Stats

10/26/19

URGENT HELP NEEDED ASAP FOR STATISTICS
suppose a certain candy is made up from red, yellow, green, blue and orange pieces.a. is you draw one piece of candy, are the events of getting a yellow one and getting a blue one disjoint,... more
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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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Stats Statistics

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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Stats

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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Stats Probability

10/08/18

A die is rolled 30 times, and the value on top of the die recorded. This produces the following results:
Value  Occurences 1        2                2        5 3        4 4        8 5        5 6        6   A) For this data, compute the mean value on the die in this experiment. B)  Now,... more
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10/03/18

. What is the total predicted population of this country in​ 2050?
It was predicted that a country will have an elderly population (65 and older) of 8 comma 862 comma 0008,862,000 in the year 2050 and that this will be 20.520.5% of the population. What is the... more
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Stats

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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Stats

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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Stats

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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Stats

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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Stats

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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Stats

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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Stats

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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Stats

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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Stats

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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Stats

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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Stats

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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Stats

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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