A point estimate is the value from a sample that best approximates the parameter of interest. For instance, suppose you wanted to know the likelihood of getting heads with a coin flip. You flip a coin 80 times and get 44 heads. The point estimate would be 44/80. a) Suppose you want to find the average weight of an adult emperor penguin. The weight of five penguins are 46, 52, 49, 50, and 54 pounds. What is the point estimate for the average weight? pounds b) Suppose you want to find the proportion of students that are left handed? You notice that your class has 32 students, 4 of who are left handed. What is the point estimate for the proportion of left-handed students?

Q: Flip a coin 10 times and record the observed number of heads and tails. For example, with 10 flips…

A: Given that, Flip a coin 10 times and record the observed number of heads and tails. For example,…

Q: These are the guesses/assumptions about the population. a. Statistic b. Level of Significance c.…

A: here use definition of given term

Q: The average final exam score for the statistics course is 76%. A professor wants to see if the…

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Q: The average wait time to get seated at a popular restaurant in the city on a Friday night is 14…

A: b. Claim: The mean wait time greater than for men who wear a tie. Null Hypothesis: H0: μ=14…

Q: . Compare the mean of the population to the mean of the sampling distribution of the sample mean.…

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Q: the sample size affect the margin of error, E? size increases, the margin of error stays the same.…

A: According to the given information in this question, we need to identify the correct option about…

Q: There are four brothers in a family.  Their ages are 7 years,10 years,15 years, and 21 years.…

A: From the provided information, Population size (n) = 4 The ages are 7 years,10 years,15 years, and…

Q: Decide if the following statement are true or false.  If the statement is false, please correct it.…

A: Given statement is : The sample mean is denoted by ?μ and is a point estimate for the population…

Q: A sample of two hundred and fifty families showed that ninety one owned at least one car. Find an…

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Q: Before the furniture store began its ad campaign, it averaged 103 customers per day. The manager is…

A: a)   Determine the type of study used.   The type of study used is “t-test for a population mean”.…

Q: The average final exam score for the statistics course is 76%. A professor wants to see if the…

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Q: The figure is a histogram of the number of servings of fruit per day claimed by 74…

A: X=The number of servings of fruits per day n=74 We can make frequency distribution from given…

Q: Suppose multiple samples of size nn are drawn from a population with a mean of 50. The mean is…

A: Population mean =50

Q: score for students who are given colored pens on the first day of class is higher. The final exam…

A: As per our guidelines, we are allowed to answer three sub-parts only. Thanks   The sample size is…

Q: Examine the image below and then answer all parts of the question under it. Enter your answers as…

A: a) There are 4 yellow objects in 10 objects.So, P(yellow)=410=0.4b) There are 3 hearts in the 10…

Q: A sample is part of the population. O True O False

A: Sample: A sample is nothing but it indicates the subset or portion of the population…

Q: You are given the following set of observations:  98, 77, 26, 33, 88, 90, 79, 81.  What would be the…

A: Here, we have 8 observations, where if the observations are represented by x1,x2,...,x8, then the…

Q: The average final exam score for the statistics course is 74%. A professor wants to see if the…

A: Given Information: The average final exam score for the statistics course is 74% i.e., μ0=74…

Q: Teachers want to know which night each week their students are doing most of their homework. Most…

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Q: 6. A poll reports that 34% of Canadians download movies on their computers. The poll has a margin of…

A: Note: Hey there! Thank you for posting the question. Since your question has more than one question,…

Q: The average final exam score for the statistics course is 77%. A professor wants to see if the…

A: a. It is assumed that μ is the population mean final exam score for students who are given colored…

Q: When you hear thw words “population” and “sample,” what comes first in your mind

A: A population can be defined as a group of individuals belonging to the same species residing in a…

Q: For a population with an unknown distribution, the form of the sampling distribution of the sample…

A: The objective of the question is to identify the form of the sampling distribution of the sample…

Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.