Basic Math question and answers for September 04, 2024
- Q The number of pounds of raspberries each customer picked at a U-pick berry farm isshown.3.5, 2.2, 2.8, 4.1, 4.5, 3.9, 1.7, 3.4, 4.2, 4.7, 5.2, 4.0, 3.3, 0.6Which measure or...
- Q The level of nitrogen oxides (NOX) in the exhaust of cars of a particular model varies Normally with mean 0.24 grams per mile (g/mi) and standard deviation 0.059 g/ml. Government...
- Q 17. Assume that SAT scores are normally distributed with mean = 1385 and standarddeviation =150. If 16 scores are randomly selected, find the probability that theirmean score is greater than...
- Q About 5% of the population has a particular genetic mutation. 700 people are randomly selected.Round your answer to three decimal places.(a) Find the mean for the number of people with...
- Q Fund A sells at $32 a share and has a 3-year average annual return of $3 per share. The risk measure ofstandard deviation is 15.5. Fund B sells at $42...
- Q The distribution of total body protein in healthy adult men is approximately Normal, with standard deviation ? = 0.1 kg. A 95% confidence interval for the true mean total body...
- Q A body moves on a coordinate line such that it has a position s= f(t)=t-6t+5 on the interval 0 ?t?9, with s in meters and t in seconds.a. Find the...
- Q A theater is presenting a program on drinking and driving for students and their parents or other responsible adults. The proceeds will be donated to a local alcohol information center....
- Q The numbers listed below represent the amount of precipitation (in inches) last year in six different U.S. cities. 15.9 17.7 47.9 38.8 18.3 24.54433.6 in.43.4 in.13.17 in.5301.1 in.
- Q Use the Standard Normal Table or technology to find the z-score that corresponds to the following cumulative area.0.9074The cumulative area corresponds to the z-score of(Round to three decimal places as...
- Q The coach of a college basketball team records the resting pulse rates of the team's players.A confidence interval for the mean resting pulse rate of all collegians based on these...
- Q Are you smarter than a second-grader? A random sample of 61 second-graders in a certain school district are given a standardized mathematics skills test. The sample mean score is x...
- Q The average human gestation time is 266 days from conception. A researcher suspects that proper nutrition plays an important role and that poor women with inadequate food intake would have...
- Q The high temperatures (in degrees Fahrenheit) of a random sample of 14 small towns are:97.3 97.298.9 99.396.3 98.498.2 99.696.4 99.798.7 97.797.4 97.6Assume high temperatures are...
- Q Find the indicated percentile.Assume that the random variable X is normally distributed with mean =50 and standard deviation = 12. Find the 40th percentile for X.44.642.084753
- Q Find the indicated z-score.Find the z-score for which the area under the standard normal curve to its left is 0.70.0.980.470.810.53
- Q For X with ? = 10, ? = 15 and a sample size of 40, P(X > 9) =Note: round your z score to two decimals places 0.4721. 0.3372..5279.0.6628. none...
- Q Find the sample standard deviation.42, 87, 69, 60, 64, 22, 67, 74, 4917.2295.6328.419.2
- Q Find the indicated area under the standard normal curve.To the left of z= -1.83 and to the right of z = 1.83
- Q A new phone system was installed last year to help reduce the expense of personal calls that were being made by employees. Before the new system was installed, the amount...
- Q Suppose you are representing the employees at a large corporation during contract negotiations. You have a list of the salaries of all the employees at the corporation. The company has...
- Q In a survey, 22 people were asked how much they spent on their child's last birthday gift. The resultswere roughly bell-shaped with a mean of $46 and standard deviation of...
- Q According to the American Time Use Survey, Americans sleep an average of 7.57 hours each day with astandard deviation of 2.65 hours. Let be the average of a random sample...
- Q According to a recent study, more than 900 people move to Florida each day! In fact, data show that only 31% of current Florida residents were born in Florida. Let...
- Q Determine the two z-scores that separate the middle 87.4% of the distribution from the area in the tails of the standard normal distribution.-1.46, 1.46-1.45, 1.45-1.53, 1.53-1.39, 1.39
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