Compute a 95% CI for the mean age.

Q: Quartering a positive mean (dividing by 4) has what effect on the normal curve?

A: The normal distribution: A continuous random variable X is said to follow normal distribution if the…

Q: what is the area of this parelogram?

A:

Q: Define sampling variability?

A: In general, variability is also called as range.

Q: Explain Bionomial distribution with examples?

A: X~Binom(n , p) =========== Formula : P(X =x) = nxpx(1-p)n-x ; x= 0,1,2,..,n

Q: In a normal distribution, find the mean if the standard deviation is 100, and 70.19% of the total…

A: Given that the standard deviation is 100 and 70.19% of the total area lies to the right of 500. That…

Q: Explain the the Chi-Squared Distribution?

A:

Q: It contains data on brain mass in different species versus glia-neuron ratio, the latter being a…

A: Note: Hi there! Thank you for posting the question. As your question has more than 3 parts, we have…

Q: If the 95% Cl for the variable "Party Identification" includes zero, this variable is statistically…

A: We have given the statement about the party identification

Q: FOR ESTIMATION OF PARAMETERS IN STATISTICS: What are the Types of Estimates? How to estimate a Mean?

A: In Estimation of Parameter in statistics there are two types of estimation, i. Point Estimation  ii.…

Q: A mother is creating the family budget for next year and wants to come up with a single value to…

A: Mean is the correct option. She should use Mean as the descriptive statistic to calculate the cost…

Q: The absolute difference between the population mean and the sample mean is called the

A:

Q: Explain the key features of a normal distribution

A: Normal Distribution :  The normal distribution is also called as Gaussian distribution. It is made…

Q: Draw an OGIVE curve corresponding to the data and use it to estimate the median

A: for the observed frequency distribution,  we need to draw an Ogive curve and find the median.…

Q: Between what two values of Z (symmetrically distributed around the mean) will 95.44% of all possible…

A:

Q: age normally distributed

A: Solution

Q: A newspaper infographic titled "Baby's First Photo Reveal" summarized data from a survey of 1,000…

A: Answer is given by confidence interval.

Q: How to create a frequency distribution?

A: Frequency of each class is obtained by counting the number of times each data point appeared in each…

Q: So what is the actual median volume?

A: Given data : Actual median value  ?

Q: What might an exposure ratio threshold look like?

A: The exposed rate is defined as the rate at which individuals in the case group are exposed to a risk…

Q: What is a frequency distribution? Explain how these differ if we are using qualitative data versus…

A: Frequency distribution- Frequency distributions are visual displays that organise and present…

Q: The amount of time in years that an entry-level employee for a shipping company stays with the…

A: given data exponential distributionμ = 4.41λ = 14.41find 64th  percentile.

Q: calculate that the mean age of students, where 30 is the mean and standard deviation is 6. Between…

A:

Q: Average temperatures in MMáy in a certain city are normatly distributed with a mean ef 70 degrees…

A: From the given information, Consider, X is the temperatures in May that follows normal distributed…

Q: Determine the failure rate for a 150-hour test of 12 items, where six items failed without…

A: Here given failure rate are: 12,39,66,93,100,133

Q: What percentage of scores falls in the tails of a normal curve?

A: Empirical rule: According to empirical rule, 99.7% of data lies within three standard deviations of…

Q: Derive the negative MGF of binomial distribution

A: We have to derive mgf(moment generating function) of binomial distribution.

Q: The length of human pregnancies from conception to birth varies according to a distribution that is…

A: Suppose the random variable x defines the length of human pregnancies from conception to…

Q: What is Descriptive Statistics?

A: Descriptive statistics: Descriptive statistics is nothing but the way to describe data. When we have…

Q: This distribution illustrates a

A: Here Given graph of distribution

Q: The best point estimate of population mean is?

A: Best Point estimation requires the use of survey data to measure a single value (also known as a…

Q: ind a replacement life-test sampling plan of 1000 hours that will accept a lot with mean life of…

A: Solution : Given data:             Q1Q0=6003000          =0.2            TQ0=10003000         =0.3…

Q: The U.S. Census Bureau computes quarterly vacancy and homeownership rates by state and metropolitan…

A: Using Excel>data>data analysis>ANOVA>One-way ANOVA, we get: Since, P-value < 0.05 OR…

Q: What is the 40th percentile of wait times for customers calling the help line?

A: Here given  Amount of time customer wait is exponentially distributed with mean 7.5 minutes

Q: Define the term statistic.

A: We have to define the term statistic.

Q: The amount of time spouses shop for anniversary cards can be modeled by an exponential distribution…

A:

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.