Suppose that a study of elementary school students reports that the mean age at which children begin reading is 5.45.4 years with a standard deviation of 0.90.9 years.   Step 2 of 2:  If a sampling distribution is created using samples of the ages at which 3939 children begin reading, what would be the standard deviation of the sampling distribution of sample means? Round to two decimal places, if necessary.

Q: uppose the true proportion of voters in the county who support a new fire district is 0.36. Consider…

A: Given that, p = 0.36 1 - p = 1 -0.36 =0.64 n = 93

Q: If a population has a mean of 228.8 and a standard deviation of 35.5 then a sampling distribution…

A: Given that, mean is 228.8 and standard deviation is 35.5. We will use z-standard normal…

Q: If a population has a standard deviation σ of 36 units, what is the standard error of the mean if…

A: The population standard deviation is 36.

Q: Suppose that the efficacy of a certain drug is 0.56. Consider the sampling distribution (sample size…

A: The objective of this question is to find the mean and standard error of the sampling distribution…

Q: A study on the latest fad diet claimed that the amounts of weight lost by all people on this diet…

A: Solution: Let X be the weight loss. From the given information, µ=23.9 pounds and σ=7.3 pounds.

Q: A recent study shows that out of 5, 000 people who moved to Arizona, 2, 350 did so to take a new…

A: From the given information, sample size n = 1000. Total number of people moved n(S) = 5000. Number…

Q: A successful basketball player has a height of 6 feet 8 ​inches, or 203 cm. Based on statistics from…

A: Consider X is a random variable defined as the height of a successful basketball player.The provided…

Q: Suppose that a study of elementary school students reports that the mean age at which children begin…

A: given data normal distribution population mean (μ) = 5.3population sd (σ) = 0.7sample size (n) = 31

Q: According to data from the 2010 United States Census, 71.6% of the total United States population…

A:

Q: Suppose that a study of elementary school students reports that the mean age at which children begin…

A: The provided information are: Population mean (µ) = 5.7 Population standard deviation (σ) = 1.2…

Q: Suppose that we randomly select a sample of 80 measurements from an infinite population having a…

A: 1) Given: Mean μ=30 Standard deviation σ=5 Sample size n=80

Q: At a certain concert, 34 % of the audience was under 20 years old. A random sample of n = 249…

A: Given,sample size(n)=249sample proportion(p^)=0.34

Q: A school has a population of 8000 students with a mean height of 153 cm with a standard deviation of…

A:

Q: Suppose that quiz scores in a beginning statistics class have a mean of 6.5 with a standard…

A: Mean(µ) = 6.5 Standard deviations (σ) = 0.5

Q: Suppose that a study of elementary school students reports that the mean age at which children begin…

A: Given that, Mean, mu= 5.9  And standard deviation, sigma= 1.1 So X~N(5.9,1.1) In the 1st step we've…

Q: Suppose that a study of elementary school students reports that the mean age at which children begin…

A:

Q: Suppose that the efficacy of a certain drug is 0.38. Consider the sampling distribution (sample size…

A: The objective of this question is to find the mean and standard error of the sampling distribution…

Q: How many business students must be randomly selected to estimate the mean monthly earnings of…

A: From the given information,Confidence level ,C = 0.95 Using formula,

Q: The annual salary for one particular occupation is normally​ distributed, with a mean of about…

A: Population mean μ =136000 Population standard deviation =16000 Sample size n =30

Q: uppose the true proportion of voters in the county who support a restaurant tax is 0.65. Consider…

A: Solution: Given information: n= 196 Sample size  p= 0.65 Population proportion.

Q: Suppose that among the population of smartphone owners with 16GB of storage, the mean amount of…

A: From the provided information, Mean (µ) = 13 GB Standard deviation (σ) = 3 GB

Q: Suppose that a study of elementary school students reports that the mean age at which children begin…

A: GivenMean(μ)=5.7standard deviation(σ)=1.2sample size(n)=60

Q: Suppose that a study of elementary school students reports that the mean age at which children begin…

A: Central Limit Theorem for mean: Consider a sample of size population having mean μ and standard…

Q: f elementary school students reports that the mean age at which children begin reading is 5.4 years…

A: As the sample size is higher than 30, it can be said that the distribution follows the normal…

Q: If a population has a mean of 53.3 and a standard deviation of 41. Consider a sampling distribution…

A:

Q: It is generally believed that 49 percent of all college students complete their college careers.…

A:

Q: The amount that households pay service providers for access to the Internet varies quite a bit, but…

A: Explanation:a sample survey asks an SRS is 500 households Find the sampling distribution of x  In…

Q: The annual salary for one particular occupation is normally distributed, with a mean of about…

A:

Q: A study on the latest fad diet claimed that the amounts of weight lost by all people on this diet…

A: Sample  size(n)=93mean()=20.4Standard deviation()=3.8

Q: C Given: M=92, =8, n=1oo, Data normal Find - Std. score E) for X =71 b what %. less then 76?. score…

A: See the handwritten solution

Q: When sampling from a population with mean μ and standard deviation σ, the sampling distribution of…

A: Given that  Population with mean μ and standard deviation σ

Q: An economist would like to estimate the mean amount of money that a family spends to within $30. If…

A:

Q: Suppose a random sample of 4949 measurements is selected from a population with mean 6060 and…

A: We have given thatMean() = 60standard deviation () = 10sample size (n) = 49

Q: Suppose that a study of elementary school students reports that the main age at which children begin…

A: From the provided information, Mean (µ) = 5.9 Standard deviation (σ) = 0.8

Q: A study on the latest fad diet claimed that the amounts of weight lost by all people on this diet…

A: Let σ denote the standard deviation of the population and n denote the sample size. Then, standard…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.