1. An independent researcher wishes to estimate the average amount of money a young professional spends in clothing each month. A sample of 30 young professional who spend in clothing found the mean to be Php 500 and the standard deviation to be Php 60. Find 95% confidence interval of the population mean.

Q: 98, 140, 130, 120, 130, 102,160 the SD is?

A: The given data is 98,140,130,120,130,102,160

Q: Suppose you want to create a confidence interval for the number of almonds contained in a certain…

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Q: One hundred draws are made at random with replacement from a box. The average of the draws is 22.1,…

A: The sample mean is 22.1 and the standard deviation is 10.

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Q: A well-known brokerage firm executive claimed that 50% of investors are currently confident of…

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Q: We have created a 95% confidence interval for μ with the result (148, 196). What conclusion will we…

A: We have created a 95% confidence interval for μ with the result (148, 196). What conclusion will we…

Q: Player    Salary    PC    TD    Age 1    25.5566    65.2    28    27 2    22.0441    60.5    27…

A: The independent variables are PC, TD and Age. The dependent variable is Salary. We have to do…

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Q: It is known that the standard deviation of the marks of a certain Mathematics exam is 2.4. For a…

A: Note: Hi, thank you for the question. As per our company guideline we are supposed to answer only…

Q: A normal population has a mean of 80 and a standard deviation of 14.0. a) Calculate the probability…

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Q: A random sample of 16 light bulbs has a mean life of 650 hours and a standard deviation of 32 hours.…

A: Mean = mu = 650 Standard deviation = sigma = 32 25.0 Sample size = 16 Therefore standard error of…

Q: The waiting times between a subway departure schedule and the arrival of a passenger are uniformly…

A: Let X be the waiting time  X~U(0,9) P(X<3.75)=?

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A: In question, Given A new treatment for a certain disease is claimed to be effective in more than 80…

Q: 12) Given these parallel boxplots, which of the following is INCORRECT? В I 46 10 12 14 16 (A) The…

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Q: (a) State the null hypothesis /, and the alternative hypothesis /H H, :0

A: We have given that  Population mean = 45 Sample mean = 44 Population standard deviation = 7 Sample…

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Q: A normally distributed data set has a mean of 0 and a standard deviation of 2. Which of the…

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Q: Is a weight loss program based on exercise just as effective as a program based on diet? The 52…

A: The question is based on hypo. testing. Given : Avg. weight of people who put on strict one year…

Q: claim that buttered toast will land with the buttered side down 50​% of the time.   H0​: p ▼…

A: Given that  Sample size n =45 Favorable cases x =19 Sample proportion p^=x/n  =19/45 =0.4222 NOTE:-…

Q: Listed below are the lead concentrations​ (in μg/g​) measured in different Ayurveda medicines.…

A: From the provided information, Sample size (n) = 10 Level of significance (α) = 0.05

Q: P 100% Done AA a learn.hawkeslearning.com Save & Exit Certify Lesson: 11.4 Hypothesis Testing: Two…

A: By using online calculator

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Q: The usual purpose of an experiment is to O a) test a model that is based on a hypothesis. b)…

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A: Given information: x y X^2 Y^2 XY 36 4.9 1296 24.01 176.4 37 5.3 1369 28.09 196.1 38 5.8…

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Q: Imagine a game show on television where one lucky contestant is presented with three upside-down…

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Q: Suppose a drug company designs to develop a new drug to prevent colds. The company states that the…

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Q: In a local teaching district, a technology grant is available to teachers in order to install a…

A: Given that  n=250 , X=142

Q: 2 Given a =5 and the values in the table, Observation Y 1 3 4 10 14 11 12 356 6789=

A: Here a=5, The data is given as follow Observation X Y 1 6 3 2 7 5 3 8 6 4 10 14 5 11…

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A: The p-value method is a way of conducting hypothesis testing.

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Q: Scores on the Beck Depression Inventory (BDI) were obtained from 71 participants before and after a…

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Q: Suppose a drug company designs to develop a new drug to prevent colds. The company states that the…

A: a)   Assume that p1, p2 as the true population proportions of women and men, who got cold,…

Q: Question 14 You conduct a poll of FIU students in order to determine the percentage of students (p)…

A: Given X=80, n=100,p=0.70 p^=X/n

Q: Suppose that you draw eight cards with replacement from a standard deck of 52 cards, adequately…

A: