a nutritionist claims that the standard deviation of the number pf calories in 1 tablespoon of...

a nutritionist claims that the standard deviation of the number pf calories in 1 tablespoon of thr major brands of pancake surup is 45. A sample of major brands of pancakes syrup is selected and the number of calories is shown. at 0.02 can thr claim be rejected? 27,210,200,100,220,210,100,240,200,100,210,100,210,100,210,100,60

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orchestra answered 1 year ago

Orville redenbacher states that the average number of calories in a serving of popcorn is 120 with a standard deviation of 15.

Orville redenbacher states that the average number of calories in a serving of popcorn is 120 with a standard deviation of 15. a nutritionist claims a serving of popcorn is less than 120 calories. he selects 42 different popcorn samples and finds the average calories to be 115 calories per serving. check the nutritionist claim at a=0.01

A food researcher claims that there is a difference in the number of calories contained in...

A food researcher claims that there is a difference in the number of calories contained in sandwiches purchased from Deli A and Deli B. The researcher purchased 10 sandwiches from Deli A, and 10 from Deli B, and recorded the number of calories for each sandwich as follows: Deli A 420 630 790 590 610 480 570 740 620 420 Deli B 680 750 430 760 650 710 430 400 860 690 a) What is the test statistic? A. -1.058...

1. A nutritionist claims that the percentage of people that get too much sodium in their...

1. A nutritionist claims that the percentage of people that get too much sodium in their diet is greater than 60% and decides to test this assertion by computing the proportion for a random sample. The data results in a test statistic of z = 2.96 and a Pvalue of .0015 a. State the hypotheses for their test. b. Briefly describe what the P-value is. c. Using the test statistic, how was the P-value found? d. Based on the P-value...

A community college claims that the standard deviation in the cost of TI calculators is at...

A community college claims that the standard deviation in the cost of TI calculators is at least $15. A simple random sample of 43 stores that sell TI calculators yielded a sample mean of $84 and a sample standard deviation of $12 for the cost of TI calculators. Does this data refute the claim made by the community college? Perform a statistical test at the 5% significance level. You may assume that the cost of TI calculators is normally distributed....

For a normally distributed population, : with a standard deviation of 3.8 An article claims the...

For a normally distributed population, : with a standard deviation of 3.8 An article claims the mean life expectancy of wolves is greater than 7 years. David is a researcher and he decides to sample the population. He obtains the age of death of 30 wolves that have been studied and found the mean age of death to be 8.2. Determine the test statistic that David should use to help make decisions about whether or not the mean lifespan of...

Known: Traffic averages 1825VPH Standard deviation pf 375VPH Sample of 20 days A) Use a t...

Known: Traffic averages 1825VPH Standard deviation pf 375VPH Sample of 20 days A) Use a t distribution to determine the probability of traffic exceeding 2200 VPH and B) Use a t distribution to determine the t value for where t <0.02 (2%).

Find the mean, median, mode, and standard deviation (round standard deviation to the nearest whole number)...

Find the mean, median, mode, and standard deviation (round standard deviation to the nearest whole number) for the following SAMPLE set of test scores. 90 85 75 70 80 80 Using the above information and the Empirical Rule: What percent of scores would you expect to fall between 66 and 87? ____________ 68% of the time you would expect scores between what two values? ____________ Determine the z-score for a test score of 64. ____________...

1) A nutritionist claims that the proportion of females who consume too much saturated fat is...

1) A nutritionist claims that the proportion of females who consume too much saturated fat is lower than the proportion of males who consume too much saturated fat. In interviews with 513 randomly selected females, she determines that 300 consume too much saturated fat. In interviews with 564 randomly selected males, she determines that 391 consume too much saturated fat. Do the data support the claim that the proportion of females who consume too much saturated fat is less than...

A travel analyst claims that the standard deviation of the room rates for two adults at...

A travel analyst claims that the standard deviation of the room rates for two adults at 3-star hotels in Denver, Colorado is more than $68. A random sample of 18 3-star hotels has a standard deviation of $40. Use a 0.10 significance level to test the analyst’s claim. Assume the population is normally distributed. a. Hypothesis (steps 1-3): b. Value of Test Statistic (steps 5-6): c. P-value (step 6): d. Decision (steps 4 and 7): e. Conclusion (step 8):

A math professor claims that the standard deviation of IQ scores of the students majoring in...

A math professor claims that the standard deviation of IQ scores of the students majoring in mathematics is different from 15, where 15 is the standard deviation of IQ scores for the general population. To test his claim, 10 students were surveyed and their IQ scores were recorded. 120, 110, 113, 123, 119, 160, 220, 119, 110, 140 Test the professor’s claim using a 0.01 level of significance.

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