An unbalanced cube is rolled 250 times, and a 6 is recorded on 75 of those rolls. What is the observed probablilty that a 6 will be recorded when this cube is rolled? 0.03 0.08 0.3 0.8
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An unbalanced cube is rolled 250 times, and a 6 is recorded on 75 of those rolls.
What is the observed probablilty that a 6 will be recorded when this cube is rolled?
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- The answer you came up with is the same answer I came up with, but I got it wrong. The correct answer was 0.0236. How is that possible?me A humane society claims that less than 70% of households in a certain country own a pet. In a random sample of 700 households in that country, 462 say they own a pet. At a= 0.05, is there enough evidence to support the society's claim? Complete parts (a) through (c) below. nts (a) Identify the claim and state H, and H a Identify the claim in this scenario. Select the correct choice below and fill in the answer box to complete your choice. (Type an integer or a decimal. Do not round.) ok O A. More than % of households in the country own a pet. nch O B. The percentage households in the country that own a pet is not %. Inc OC. % of households in the country own a pet. O D. Less than % of households in the country own a pet. ter Contents essible Resources Is for Success ols for Success lultimedia Library Purchase Options Click to select and enter your answer(s) and then click Check Answer. Discussions Check Answer Clear All 4 parts remaining <. Course Tools 口 の P Type here to searchI need help
- A humane society claims that less than 67% of households in a certain country own a pet. In a random sample of 600 households in that country, 384 say they own a pet. At a = 0.01, is there enough evidence to support the society's claim? Complete parts (a) through (c) below. (a) Identify the claim and state Ho and Ha. Identify the claim in this scenario. Select the correct choice below and fill in the answer box to complete your choice. (Type an integer or a decimal. Do not round.) O A. More than % of households in the country own a pet. O B. % of households in the country own a pet. O C. The percentage households in the country that own a pet is not %. O D. Less than % of households in the country own a pet. Let p be the population proportion of successes, where a success is a household in the country that owns a pet. State Ho and Ha. Select the correct choice below and fill in the answer boxes to complete your choice. (Round to two decimal places as needed.) O A. Ho: p= O B. O C. Ho:p…Suppose that 6% of a particular population have a particularly nasty disease. There is a test for the disease that correctly identifies those with the disease 98% of the time. However, the same test gives a false positive 1% of the time. Suppose that a random person from this population is given the test as part of a wellness exam. Give answers in decimal form rounded to 4 decimal places as needed. A. Suppose that a random person comes in for a wellness exam and tests positive for the disease. What is the probability that she actually has the disease? B. Suppose that a person comes in for a wellness exam and tests negative. What is the probability that this person does not have the disease? C. What proportion of the total population will test positive? D. What proportion of the total population will not have the disease and will test negative?What is the probability that a card drawn randomly from a standard deck of 5252 cards is a six? Express your answer as a fraction in lowest terms or a decimal rounded to the nearest millionth.
- 5.A humane society claims that less than 61% of households in a certain country own a pet. In a random sample of 700 households in that country, 399 say they own a pet. At a= 0.05, is there enough evidence to support the society's claim? Complete parts (a) through (c) below. (a) Identify the claim and state H, and Ha. Identify the claim in this scenario. Select the correct choice below and fill in the answer box to complete your choice. (Type an integer or a decimal. Do not round.) O A. The percentage households in the country' that own a pet is not %. O B. Less than % of households in the country own a pet. O C. More than % of households in the country own a pet. O D. % of hoúseholds in the country own a pet.A humane society claims that less than 72% of households in a certain country own a pet. In a random sample of 400 households in that country, 272 say they own a pet. At a = 0.10, is there enough evidence to support the society's claim? Complete parts (a) through (c) below. (Type an integer or a decimal. Do not round.) A. Less than 72% of households in the country own a pet. % of households in the country own a pet. C. More than % of households in the country own a pet. D. The percentage households in the country that own a pet is not %. O B. Let p be the population proportion of successes, where a success is a household in the country that owns a pet. State Ho and H₂. Select the correct choice below and fill in the answer boxes to complete your choice. a (Round to two decimal places as needed.) A. Ho:pz Ha: p Ho: P# 0.72 Ha: p= 0.72 OC. Ho: P Ha:ps
- Find the five-number summary of Cavendish's measurements from the list below? Choose five numbers from the list.)A certain affects virus 0.8% of the population. A test used to detect the virus in a person is positive 88% of the time if the person has the virus (true positive) and 13% of the time if the person does not have the virus (false postive). Fill out the remainder of the following table and use it to answer the two questions below. (enter answer with no commas, i.e. as 1000 not 1,000.) Infected Not Infected Total Positive Test [a] [b] [c] Negative Test [d] [e] [f] Total 800 99,200 100,000 i) Find the probability that a person has the virus given that they have tested positive. (Round your answer to the nearest tenth of a percent and do not include a percent sign.)[g]_______ % ii) Find the probability that a person does not have the virus given that they test negative. (Round your answer to the nearest tenth of a percent and do not include a percent sign.)[h]________ %Sean thinks that he has a special relationship with the number 6. In particular, Sean thinks that he would roll a 6 with a fair 6-sided die more often than you'd expect by chance alone. Suppose pis the true proportion of the time Sean will roll a 6. (a) State the null and alternative hypotheses for testing Sean's claim. (Type the symbol "p" for the population proportion, whichever symbols you need of "", "-", "not =" and express any values as a fraction e.g. p = 1/3) Ho= Ha (b) Now suppose Sean makes n = 30 rolls, and a 6 comes up 6 times out of the 30 rolls. Determine the P-value of the test, giving your answer to 4 decimal places. Please use 3 decimal places in your test statistic when finding the P-value. P-value = ⠀⠀ (c) Answer the question: Does this sample provide evidence at the 5 percent level that Sean rolls a 6 more often than you'd expect? (Type: Yes or No) 4
