Sampling Distribution of a Proportion - Page 2
Questions
- Why is a sample statistic a random variable?
- What is the formula #("group size")/("total population")times"sample size"# used for?
- There are 98 flowers in the bride's bouquet. If 25 of the flowers are roses, approximately what percent of the flowers in the bouquet are not roses?
- Among the contestants in a competition are 43 women and 21 men. If 3 winners are randomly selected, what Is the probability that they are all men?
- At a certain hospital, 40 patients have lung cancer, 30 patients smoke, and 25 have lung cancer and smoke. Suppose the hospital contains 200 patients. If a patient chosen at random is known to smoke, what is the probability that patient has lung cancer?
- Sienna tossed 10 heads when tossing a coin 24 times. What is the experimental probability of tossing heads?
- What is the experimental probability that a baby will be a girl, if out of #90# babies born, #50# were girls?
- Suppose the demand and supply equations for wheat per year in a country can be specified as follows ? : Q (D) = 500 – 2P Q(S) = – 100 + 4P P is the price in dollars per thousand bushels and Q is the quantity of wheat in thousands of bushels.
- What is the third quartile of the data set $140, $174, $148, $171, $150, $167, $152, $166?
- Asurvey of 250 people eating out found that 112 plan to see a movie after their meal. What is the probability a person eating out will see a movie after their meal?
- Look at table below. Find these probabilites. A.) Exactly 1 item B.) More than 2 items C.) At least 1 item D.) At most 3 items?
- Human proofreaders catch 70% of word errors. If a single essay contains 10 word errors, what is the distribution of the number of errors caught in this essay?
- At the Avonlea Country Club, 68% of the members play bridge and swim, and 85% play bridge. If a member is selected at random, what is probability that the member swims and plays bridge?
- A committee of 5 is to be selected from a group of 6 men and 9 women. If the selection is made randomly, what is the probability that the committee consists of 3 men and 2 women?
- 11 students in the AP Calculus class received the following scores on their term final, who ranks in the 82nd percentile for the class?
- A survey of showed that 6% of families-1 child, 38% -2, 42%-3 and 10%-3 or more. A family is selected at random. What is the probability that it has some children?
- A family has 3 children. Find the probabilities. A) all boys B) All boys or all girls C) Exactly two boys or two girls D) At least one child of each gender What are the probabilities?
- A particular driving test examiner is known to fail half of all individuals whom he examines. For a session he will examine 4 candidates. What is the expected proportion of the 4 who will pass?
- In a certain country 12% of houses have solar heating. 19 houses are chosen at random. Find the probability that fewer than 4 houses have solar heating. the answer is in the picture ,the thing i don't understanding is from where did the brought 0.88 ?
- Lynn and Dawn tossed a coin 50 times and got heads 22 times .What is the experimental probability of tossing heads using Lynn and Dawn'results?