Statistics question and answers for January 18, 2024
- Q The weight of a newborn animal is given by the formula W 4d 5 where W is the weight in grams and d is the number of days since hatching...
- Q The following table gives the total number of live Christmas trees sold in millions in the United States from 2004 to 2011 Source Statista com 2 0 27 1 28...
- Q Please round all answers to 2 decimal places Given the table below use your calculator to find the Line of Best Fit X Y 3 8 4 4 1 2...
- Q Choose the most appropriate completion of the sentence In order to indicate a strong correlation between variables the correlation coefficient will be O near 10 O near 1 near 1...
- Q A regression was run to determine if there is a relationship between hours of TV watched per day x and number of situps a person can do y The results...
- Q In 1991 the moose population in a park was measured to be 4750 By 1996 the population was measured again to be 5150 If the population continues to change linearly...
- Q You are performing a right tailed test with test statistic z 1 344 find the p value accurate to 4 decimal places p value
- Q The weight of a newborn animal is given by the formula W 4d 5 where W is the weight in grams and d is the number of days since hatching...
- Q You are performing a right tailed test with test statistic z 1 344 find the p value accurate to 4 decimal places n value
- Q A well known brokerage firm executive claimed that 30 of investors are currently confident of meeting their investment goals An XYZ Investor Optimism Survey conducted over a two week period...
- Q Write an equation for the graph below in terms of a 5 4 3 2 3 2 1 y 1 2 3 A 54 2 ton
- Q The p value for a hypothesis test turns out to be 0 021868 At a 7 level of significance what is the proper decision O Reject Ho O Fail to...
- Q Part 1 Evaluate the following linear equation for the given values x 4 3 0 5 y 4x 2 Part 2 Graph the linear equation on the coordinate plane below...
- Q You are performing a hypothesis test of a single population proportion You find out that np is less than five What must you do to be able to perform a...
- Q The Food and Drug Administration FDA is a U S government agency that regulates food and Brugs for consumer safety One thing the FDA regulates is the allowable insect parts...
- Q Suppose that a recent article stated that the mean time spent in jail by a first time convicted burglar is 3 2 years A study was then done to see...
- Q 68 of workers indicate that they are satisfied with their job Express the null and alternative hypotheses in symbolic form for this claim enter as a percentage Ho P H...
- Q Evaluate the following linear equation for the given values X 4 1 L 3 y 4x 5
- Q the following True or False Suppose a sample size of 87 was used to conduct a right tailed hypothesis test for a single population mean The null hypothesis was Ho...
- Q You are performing a right tailed test with test statistic z 0 44 find the p value to 4 decimal places
- Q Evaluate the following linear equation for the given values y 3x 4 x 2 1 1
- Q The p value for a hypothesis test turns out to be 0 06012 At a 4 level of significance what is the proper decision O Reject Ho O Fail to...
- Q You are performing a hypothesis test of a single population proportion What must be true about the value of the products np and nq O Both np and nq must...
- Q The IQ test is constructed so that Full Scale IQ scores follow a normal dis mean of 100 and a standard deviation of 15 The dean of a school believes...
- Q The shape of the distribution of the time required to get an oil change at a 10 minute oil change facility is unknown However records indicate that the mean time...
- Q Food inspectors inspect samples of food products to see if they are safe This can be thought of as a hypothesis test with the following hypotheses Ho the food is...
- Q A manufacturer of cell phone batteries markets its batteries as having on average 500 charges A consumer group decides to test this claim by assessing the number of times 30...
- Q An ice cream inspector inspects samples of ice cream to see if they are safe This can be thought of as a hypothesis test with the following hypotheses Ho the...
- Q A commonly cited standard for one way length duration of school bus rides for elementary school children is 28 minutes A local government office in a rural area randomly samples...
- Q Suppose the results indicate that the null hypothesis should be rejected thus it is possible that a type I error has been committed Given the type of error made in...
- Q Less than 33 of workers got their job through internet resume sites Express the null and alternative hypotheses in symbolic form for this claim Ho p HA P
- Q Solve the inequality State the solution in interval notation 4 x 3 14 4 5x 5 2x
- Q In an hypothesis test the decision was made to reject the null hypothesis The null hypothesis was later determined to be true What kind of error if any was committed...
- Q A commonly cited standard for one way length duration of commute for an employee is 29 minutes A company samples 200 employees and find an average one way commute time...
- Q Solve for z 25z 500 Oz 20 Oz 20 Oz 20 7 20
- Q Solve for y 4 Oy Oy 10 11 160 11 160 40 11
- Q Use the quadratic formula to solve the equation Be sure to simplify your answers Enter both answers separated by a comma 49x 25 0
- Q Solve the inequality and write your answer in interval notation 18x 102 1 14x
- Q Use the quadratic formula to solve the equation Be sure to simplify your answers Enter both answers separated by a comma 16x 4 0
- Q 2x 5 x 1 r
- Q Solve 2 3 x 10 8 for x
- Q Solve the proportion 31 11 16 x Round to two decimal places if necessary
- Q 8 FRQ A manufacturer makes and packages pencils The mean weight of an individual pencil is 16 g with a standard deviation of 1 g The weights of pencils are...
- Q Suppose 70 of all adults drink coffee If you were to conduct a simulation involving coffee drinkers and non coffee drinkers which of the following is a valid assignment of...
- Q Consider the following probability model associated with the number of raffle tickets purchased by each customer a 0 15 b 0 25 c 0 35 d 0 20 OC OD...
- Q You play tennis regularly with a friend and from past experience you believe that the outcome of each match is independent For any given match you have a probability of...
- Q A statistics teacher states the probability of a surprise quiz on any given day is 0 30 If quizzes are given independently each day what is the probability there will...
- Q A statistics teacher states the probability of a surprise quiz on any given day is 0 30 If quizzes are given independently each day what is the probability there will...
- Q Which of the following statements is alse a All possible outcomes together must have probabilities that add up to 1 b An event is random if individual outcomes are uncertain...
- Q Which of the following statements is alse a All possible outcomes together must have probabilities that add up to 1 b An event is random if individual outcomes are uncertain...
- Q Select the correct answer for each question s The test pages are attached below for your review All questions may not be listed Chapter 4 Test first 2 pages pdf...
- Q You measure 46 turtles weights and find they have a mean weight of 41 ounces Assume the population standard deviation is 10 7 ounces Based on this construct a 99...
- Q The city wishes to estimate the average commute distance for all city employees They collect a random sample of 79 employees and find a sample mean of 7 3 miles...
- Q Solve the compound inequality and give your answer in interval notation 8x123 AND 2x 8 2
- Q Solve for g 14g 2 280 20 20 Og Og Og 20 20
- Q Express the confidence interval 34 6 7 8 in interval form
- Q Solve the compound inequality and give your answer in interval nota 1x 6 2x9 AND 2 4x4 2 8x 86
- Q Solve the inequality and write your answer in interval notation 20x3 17 2x
- Q Solve the inequality and write your answer in interval notation 20x4 1 11x
- Q Solve for z 12z 216 18 18 Oz Oz O z 18
- Q A student was asked to find a 95 confidence interval for widget width using data from a random sample of size n 29 Which of the following is a correct...
- Q What changes the width of a confidence interval A marketing director wants a 95 confidence interval for the mean cost of running shoes She randomly samples 40 pairs of shoes...
- Q A confidence interval for the population mean number of jobs a person has before the age of forty was found to be 8 1 to 10 5 Find the midpoint...
- Q All else equal an increase in sample size will cause a n decrease increase O in the size of a confidence interval
- Q Which of the following would result in the widest confidence interval OA sample size of 100 with 95 confidence OA sample size of 30 with 95 confidence OA sample size...
- Q If n 41 42 and s 6 construct a confidence interval at a 80 confidence level Give your answers to one decimal place Technolom
- Q In a survey funded by the UW school of medicine 750 of 1000 adult Seattle residents said they did not believe they could come down with a sexually transmitted infection...
- Q We wish to estimate what percent of adult residents in a certain county are parents Out of 200 adult residents sampled 130 had kids Based on this construct a 99...
- Q A student was asked to find a 95 confidence interval for widget width in mm using data from a random sample of size n 18 Which of the following is...
- Q A random sample of 75 students at the University of Minnesota spend an average of 614 per month in rent with a standard deviation of 219 The distribution is moderately...
- Q Express the confidence interval 81 4 in interval form Express the answer in decimal format do not enter as percents Question Help Video Post to forum
- Q Calculate x bar for the data shown to two decimal places X 17 2 2 2 7 4 27 1 9 1 14 9 25 5
- Q A student took six exams in a course last semester The scores are shown below 71 87 94 74 94 74 Calculate the mean variance and standard deviation Round to...
- Q Express the confidence interval 83 6 6 3 in interval form Express the answer in decimal format do not enter as percents
- Q Calculate x bar for the data shown to two decimal places X 18 1 15 1 6 4 10 2 26 6 9 16 7
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