The FDA regulates that fish consumed by humans must contain at most 1 mg/kg of mercury. In Florida, bass fish from 59 different lakes were analyzed to measure mercury amounts. The investigation aims to determine if the fish from all Florida lakes have a mercury level exceeding the allowable limit. The random variable, population parameter, and hypotheses are outlined below.a) **Symbol for the random variable:** - The symbol used for the random variable is \( \bar{x} \). - Contextual wording: "the mercury level in fish."b) **Symbol for the parameter:** - The symbol used for the parameter is \( \mu \). - Contextual wording: "the mean mercury level in fish of 59 randomly selected Florida lakes."c) **Null and alternative hypotheses:** - Null hypothesis \( H_0: \) \[ \mu \leq 1 \] (Note: syntax is incomplete with icons displayed for greater or equal sign and a placeholder). - Alternative hypothesis \( H_A: \) \[ \mu > 1 \] (Note: syntax is incomplete with icons displayed for the greater-than sign and a placeholder).d) **Type I error in the context:** - A Type I error would occur if we reject "that the mean mercury level in fish for all Florida lakes is 1 mg/kg when the mean is really lower than that."- **Dropdown menu explanation:** The dropdown menu lists possible interpretations of a Type I error, with the correct choice being highlighted: "Rejecting that the mean mercury level in fish for all Florida lakes is 1 mg/kg when the mean is really lower than that."

To test that the given data provide enough evidence to show that the fish in all Florida lakes have…

Answered: The FDA regulates that a fish that is…

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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2. In a population it is estimated that 20% have a desired trait of interest for the researcher. The researcher wants to know how many people on average he has to draw from a population to get 2 people with the trait. Use rows 20-24 of the Random Number Table to carry out the simulation. Explain clearly how you set up the problem and report your findings. Answer:
In a survey of 175 females who recently completed high school, 76% were enrolled in college. In a survey of 150 males who recently completed high school, 72% were enrolled in college. At a = 0.05, can you reject the claim that there is no difference in the proportion of college enrollees between the two groups? Assume the random samples are independent. Complete parts (a) through (e). O A. Ho: P1 #P2 Ha: P1 = P2 O B. Ho: P1 P2 OF. Ho: P1 = P2 O D. Ho: P1 > P2 Ha: P1 SP2 Ha: P1 O B. z 1.96 O D.
1. A partially completed ANOVA table for a completely randomized design is shown here: SOURCE DF SS MS F Treatments 18.4 A В Error D E Total 41 45.2 Complete the ANOVA table. What is the value of D? (one decimal only)
2 Define the random variable, its type of distribution, and compute for the variable/measure that is being asked. You can follow the example below
and o from the given parameters of the population and sample size. Determine u = 84, o = 18, n = 81 .....
According to the Federal Trade Commission report on consumer fraud and identity theft, 23% of all complaints in 2007 were for identity theft. This year, a certain state kept track of the number of its 1325 complaints were for identity theft. They want to know if the data provide enough evidence to show that this state had a different proportion of identity theft than 23%? State the random variable, population parameter, and hypotheses. Fill in the correct null and alternative hypotheses. H0:H0: HA:HA: A Type I error in the context of this problem would be A Type II error in the context of this problem would be
5. Which of the following is an example of a discrete random variable? A. The height of mongo plants in a field measured within 3 months B. The number of siblings of Grade 11 students of DQBSNHS C. The weight of newborn babies around the world daily D. Volume of water in tanks among households of San Fernando 6. Which of the following equipment provides a discrete variable? A. Bill Counter B. Stethoscope C. Thermometer D. Voltmeter 7. What is the sum of all the probabilities of a simple event? A.O В. 1 C.2 D. 3 A. 0 8. When a certain event is sure to happen, then what is its probability? A. O В. 1 C.2 D. 3 9. When a certain event will not really happen, then what is its probability? A.O В. 1 C. 2 D. 3 10. What is/are the possible value/s of the random variable X if X is the number of heads in tossing a coin? A. (0) B. (0,1) C. (0,1,2) D. (0,1,2,3) 11. What is/are the possible value/s of the random variable Y if Y is the number of fails in tossing two coins? A. (0) B. (0,1) C. (0,1,2)…
Random sample of team members average practice time. Team A: x-bar=52.3, s=9.7, n=125 Team B: x-bar=45.6, s=13.3, n=120 a) Does the data provide convincing statistical evidence that team B spends less time practicing, on average, than those on Team A? b) What type of error, Type I or Typy II, could have been made and the consequences?
II. Supply the table with the corresponding random variable and/or the possible values of the random variable for each experiment. Possible values (x) for the Experiment Random Variable (X) Random Variable Number of customers who 1. Contacting 10 customers 0, 1, 2, 3, 4,5 placed a complaint 2. Inspection of shipment of 100 laptops 3. Filling a bottle of water (maximum of 500 mL) 0, 1,2, .,99, 100 0sxs 500 The temperature when the desired reaction takes place (minimum of 40°C; maximum of 90* C) 4. Testing of new chemical process 5. Selling an automobile O if male; 1 if female
What are the differences between the two types of random variables in statistics? B i U Font Family AAA = in O 0
6% of all statistics classes require a statistical calculator and 25% require the use of a computer that has statistical software. Of the classes that require a statistical calculator, 13% also require the use of a computer. If a statistics course is selected at random find: (round to 4 decimal places where possible) a. P(Statistical Calculator) = Correct b. P(Statistical Software) = Correct c. P(Require a Statistical Calculator and Statistical Software) = Incorrect d. P(Require a Statistical Calculator GIVEN Require Statistical Software) =

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