which value of л would it be safe to assume the sampling distribution of Y is approximately normal?

Q: Practice question #8. According to one study, babies' birth weights are normally distributed with…

A: Population mean=120Population standard deviation=8

Q: Collect and summarize data into a test statistic. The sample mean difference = and the standard…

A: Determine the null and alternative hypotheses. H0: Null Hypothesis: μd =0 ( The students did not…

Q: Here are the snowfall amounts for 12 more-than-a-trace snowfalls for 2021 (rounded to the nearest…

A: Mean: Mean=sum of the data valuesNumber of data values          =4+0+6+6+0+6+0+9+2+3+1+212…

Q: Suppose the income of workers at your job follows a normal distribution. If you standardize their…

A:

Q: As the sample size​ increases, the standard deviation of the sampling distribution ▼   gets larger.…

A: Here we need to find the change that happens for the standard deviation of the sampling distribution

Q: Which of the measures of central tendency is the largest in a positively skewed distribution? А.…

A: The shape of the distribution can be determined using values of mean and median. If the mean is…

Q: The mean of the sampling distribution of Ỹ is always equal to the mean of the population. True O…

A: We have to determine which statement is true for given situation.

Q: a sampling distribution can be regarded as approximately normal when which conditions are met? In…

A: A sampling distribution is a probability distribution of a statistic obtained from a larger number…

Q: Come up with your own data for a problem that you would have to find a p-value for a normal…

A: Problem,  A police inspector claim that the average number of FIR in his Police Station is 8 per…

Q: and mean

A: Given : Mean = 40.5 Standard deviation = SD = 10 Coefficient of Skewness = 0.4 Formula : 1) karl…

Q: Assume thAt scores on a standardized test are known to follow a bell shaped distribution with a mean…

A: L

Q: If x follows a distribution not known to be normal, then to assume that the distribution of the…

A: Solution: From the given information, the distribution of X is not known.

Q: fo (b) What is the mean and standard deviation of the sampling distribution of x assuming u = 4 and…

A: Given that  Sample size n =40 Population mean μ =4 Population standard deviation =2

Q: Samples of size 50 are taken. Can you assume that the distribution for x is normal

A: The given sample size is 50.

Q: If the population standard deviation is 1.3 and the sample size is 12, then compute the standard…

A: From the provided information,Population standard deviation  = 1.3Sample size (n) = 12

Q: Find the probability that mean of sample size 36 will be negative.

A:

Q: For a perfectly symmetrical distribution with µ= 30, what is the median?

A: Given: for a Perfectly Symmetrical Distribution with µ = 30,   To Find: median

Q: During rush hour, the traffic speed on a busy highway is found to have mean 42 mph and standard…

A:

Q: When simple random samples are drawn from a population that is normally distributed, the sampling…

A: According to the definition of Central limit theorem, the sampling distribution of the sample means…

Q: The standard deviation of a sampling distribution is smaller than the standard deviation of the…

A: The comparison of sd of sample to the sd of the population is as follows:

Q: If a distribution is normal with μ = 60 and σ = 15, what is the z score of 40?

A:

Q: Suppose a professor uses a normal distribution to assign grades in her math class. • She assigns an…

A:

Q: Which of the following is a consequence of increasing variability

A:

Q: If a sample is randomly collected, we can be assured that the data follows a normal distribution.…

A: We know that ;  Any randomly collected data follows normal distribution if and only if data set must…

Q: P(Z <=)=0.5 Using standard normal table, the value of z corresponding to probability 0.95 is 1.96.

A:

Q: To determine the interval estimate of the variance ratio with known population mean and a given α,…

A: To determine the interval estimate of the variance ratio with known population mean and a given α,…

Q: The shape of the T-distribution curve is wider than the normal curve because, O a. it has more…

A: If population standard deviation is known and large sample size i.e, n &gt; 30 then we use z-…

Q: Find the sample size necessary for an 80% confidence level with a maximal margin of error E = 0.07…

A: Given that  The average weight of the birds (x¯) = 3.15 grams The population standard deviation (σ)=…

Q: parents are worried that their child s. To find out if there is a reason to ars old and asked them…

A: Given data, sample mean (x̄)  = 8.9 population mean (µ) = 8 sample size (n) = 100 sample standard…

Q: 2. Develop a UMP test for Họ: µ=75 versus Ha: u>75 in a normal distribution with variance equal to…

A: given that,variance, σ^2 =10standard deviation, σ =10null, h0: μ=75 alternate, h1: μ&gt;75level of…

Q: The critical value for assessing the difference between two proportions at the 0.05 level, or .025…

A: Given: The critical value for assessing the difference between two proportions at the 0.05 level, or…

Q: Eneme7.28. Given that the mean of a distribution is 5, variance is 9 and the mament coefficient of…

A: There are different types of moments of effects, they are moments about origin, moment about mean,…

Q: Parents are worried that their children are getting less than 8 hours of sleep due to the academic…

A:

Q: If  =p0.5  and the distribution of  p  is approximately normal, then the sample size must be at…

A: Given:p = 0.5 The sampling distribution of the sample proportion 𝑝̂ is approximately normal when np…

Q: investigator recommended taking a larger sample. What would the new sampling distribution look like…

A: Note: Hey there! Thank you for the question. The question mentions "sampling distribution", but does…

Q: A sample of scores has a mean of M = 20, a median of 28, and a mode of 29. What is the most likely…

A: Given Mean=20 Median=28 Mode=29

Q: II. Consider the data from two samples displayed in the two histograms: Sample A Sample B 30 30 25…

A:

Q: Allen's hummingbird (Selasphorus sasin) has been studied by zoologist Bill Alther.t Suppose a small…

A: In statistical inference, there are two types of estimation,  1) Point estimation and 2) Interval…

Q: In the textbook, a sampling distribution can be regarded as approximately normal when which…

A: Answer:-  Sampling data can be regarded as approximately normal when this conditions met:-