To estimate the average number ofcustomers entering and buying atthe supermarket, the supervisor ofthat supermarket estimated thenumber of customers visiting every5 minutes. She randomly selects 5-min intervals and counts thenumber of arrivals at thesupermarket. The figures 58, 32, 41,47, 56, 80, 45, 29, 32, and 78 wereobtained and tallied. The analystsassume that the number of arrivalsis normally distributed. Based onthese data,find the point estimate,compute a 95% confidence intervalto have an estimation of the meanvalue for all 5-min intervals.37.44 62.1638 – 6337 – 6336.96 – 63.03

First of all point estimate for mean and vairince are calculated

Answered: To estimate the average number of…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A pharmaceutical researcher wants to determine the proportion of people who believes that branded medicine is more effective than generic medicine. How many people should be sampled to be 95% confident that the estimate will be accurlte within 1% of the true population proportion?
Use the figure to the right, which shows the percentages of adults from several countries who favor building new nuclear power plants in their country. The survey included random samples of 1051 adults from Country A, 1120 adults from Country B, 1048 adults from Country C, and 1013 adults from Country D. At a =0.05, can you support the claim that the proportion of adults in Country B who favor building new nuclear power plants in their country is different from the proportion of adults from Country C who favor building new nuclear power plants in their country? Assume the random samples are independent. 100- 80- 60 40 20- 0- I Country A 53% I Country B 47% O Country C 46% O Country D 34% Identify the claim and state Ho and Ha. The claim is "the proportion of adults in Country B who favor building new nuclear power plants in their country is the same as the proportion of adults from Country C who favor building new nuclear power plants in their country." greater than less than different…
A survey of 700 non fatal accidents showed that 287 involved defective equipment. Find a point estimate for p, the population proportion of accidents that involved defective equipment and round to 4 decimal places if needed.
A sports psychologist wants to compare the running time for athletes vs non-athletes while running 1 mile. He collects data from 226 non-athletes and 166 athletes and analyzes it using SPSS.
The average fruit fly will lay 377 eggs into rotting fruit. A biologist wants to see if the average will be greater for flies that have a certain gene modified. The data below shows the number of eggs that were laid into rotting fruit by several fruit flies that had this gene modified. Assume that the distribution of the population is normal. 367, 374, 364, 388, 407, 369, 375, 362, 403, 383, 381, 391, 371 What can be concluded at the the αα = 0.10 level of significance level of significance? The test statistic = (please show your answer to 3 decimal places.) The p-value = (Please show your answer to 4 decimal places.)
Observatiom Random numbers. 33 13. 18 2. .3. 4. 43 14 38 14 6. 15 32 41 15 10 12 22 13 32 14 36 15 43 17 36 16 18 22 19 20 32. 21 28 31 34.1 14 22 23 -24 30 -25 26. 12 27 35.9 28 24 29 30 31 32 a5 33 20 34 38-25 35 30 42 26 42 36 31 38 39 29 40. 33 41 130 42 31 43. 44 24 45 22 46. 25 47 48 21 21-75 49 23 so 27
An automotive manufacturer wants to know the proportion of new car buyers who prefer foreign cars over domestic. Step 1 of 2 : Suppose a sample of 1217 new car buyers is drawn. Of those sampled, 267 preferred foreign over domestic cars. Using the data, estimate the proportion of new car buyers who prefer foreign cars. Enter your answer as a fraction or a decimal number rounded to three decimal places.
A sample of 10 male students was taken from the population of SHS male students in JRU. The heights (in inches) of those 10 students are as follows: 60, 72, 70, 68, 70, 62, 66, 64, 66, 56. What is the point estimate for the average height of all SHS male students in JRU?
There are 435 seats in a nation's House of Representatives. The number of representatives per state is calculated using a statistical formula determined by law, but allocation is roughly proportionate to population. In 2010, the nation's population was estimated to be 309.1 million. The state's population was estimated at 26.1 million. How many representatives would you expect to be assigned to the state? Suppose the state actually has 34 representatives. Compare this with the expected number of representatives from the state.

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