A man has an adopted grandson. After examining him at his 2-year checkup, the boy's pediatrician said that the z-score for his height relative to American 2-year-olds was -1.88. What is the correct interpretation of this z-score

Q: What is formula for converting a Raw Score to z?

A: The standard normal distribution: A continuous random variable Z is said to follow standard normal…

Q: What is the z-score corresponding to P15 three decimal places

A: z-distribution represents the standard normal distribution. Standard normal distribution has bell…

Q: What are Z scores?

A:

Q: If the z statistic value calculated is -1.49, what is the p-value

A: Hello! Thanks for the question. There is no information about the tail of the test. We are providing…

Q: What is the z score of a normally distributed square?

A:

Q: What is a Z score and why is it useful?

A:

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: When the IV and DV are both numeric, which statistical test is most appropriate to use for…

A: Regression analysis is used to estimate the relationship between variables. There will be one…

Q: If two individuals in different populations have identical X scores, they also must have identical…

A: The z score indicates how many standard deviations that a point is away from the mean. z scores can…

Q: An oil company conducts a geological study that indicates that an exploratory oil well should have a…

A: Given that  n=5 , p=20%=0.20 , q=1-p=1-0.20=0.80 X~Binomial(n=5,p=0.20) p=probability of chance of…

Q: Based on the Nielsen ratings,the local CBS affiliate claims its 11 PM newcast reaches 41% of the…

A: Given Information: Based on the Nielsen ratings,the local CBS affiliate claims its 11 PM new cast…

Q: To see how much difference time of day made on the speed at which he could download files, a college…

A:

Q: Calculate the predicted self-control score for a person living in a good neighborhood who is 18…

A:

Q: . The administrator of a new paralegal program at Seagate Technical College wants to estimate the…

A: Note: Hi there! Thank you for posting the question. As you have posted multiple questions, we have…

Q: find mean devaition of this data??

A: Calculate Mean deviation from the following grouped data Class Frequency (f) 110 - 119 1 120…

Q: If my p-value is 0.062 should I reject it and support my claim?

A: Basic: Rejection or acceptance of null hypothesis  is totally depending  on p values and…

Q: A psychologist is looking at the relationship between personality characteristics and physical…

A: Given :   Heart disease No Heart disease Total Type A 32 18 50 Type B 128 22 150 Total 160…

Q: An analysis was conducted to determine whether the average height of the 25 girls in the same class…

A: To test whether the average height of 25 girls is different from the general population of 15-year…

Q: If I have a sample of people’s ages, and the IQR is 20, what does this mean?

A: Given:  IQR for sample of people's ages is 20.

Q: Due to recent trends in the childcare industry, the firm suspects that the that the mean annual…

A: Solution: Given information: n1=20 Sample size of Illinoisn2= 20 Sample size of…

Q: A nationwide job recruiting firm wants to compare the annual incomes for childcare workers in Texas…

A: The independent sample z test, compares the mean difference between two independent population…

Q: Among the first-year resident students, eight students were randomly selected, and their body…

A: Given: weight at the beginning of the semester (X) End of term weight (Y) 45 52 61 65 62 64…

Q: What is measured by the numerator of the z-score test statistic?

A: # What is measured by the numerator of the z-score test statistic?

Q: One sample of n = 4 scores has a mean of M = 12, and a second smaple with n = 6 scores has a mean of…

A:

Q: A software company is interested in improving customer satisfaction rate from the 50% currently…

A: The null and alternative hypothesis is defined as:

Q: What is the predicted score of having a first child when the respondent's age of first marriage is…

A: Given: B0=2B1=1.2

Q: What is the average IQ of these subjects?

A:

Q: What is the correct interpretation of Jackson’s z-score?

A: The z-score value is 1.10.

Q: A software company is interested in improving customer satisfaction rate from the 62% currently…

A: Population proportion is 0.62 Sample proportion is 90/135 =0.6667

Q: Explain the Critical Z score.

A:

Q: Based on the Nielsen ratings, the local CBS affiliate claims its 11 p.m. newscast reaches 52% of the…

A: Givensample size(n)=100p^=0.47

Q: According to the 2005-2006 National Pet Owners Survey, only 16% of dogs were adopted from an animal…

A:

Q: What is the significance of a z-score?

A: The value of z score tells that how many standard deviations the data is spread away from mean. The…

Q: The state Government gives grants to low-income undergraduate students. According to the National…

A: The given hypotheses are as follows: H0: µ = 2,600. Ha: µ ≠ 2,600. The sample size is 50 students,…

Q: If random samples, each with n = 16 scores, are selected from a normal population with µ = 100 and σ…

A: Here, the known values are n = 16 scores, µ = 100 and σ = 20.

Q: (a) Among the next 210 customers, what are the mean and variance of the number who pay with a debit…

A: Consider the events A, B and C that represents the customers who pay with a credit card, debit card,…

Q: Assume you are using a significance level of a = 0.05| to test the

A: As given,  α = 0.05 We have to test the claim: µ < 20  Sample size ( n ) = 33 µ = 14 and σ = 8…

Q: What are the assumptions when you use a Z score?

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Q: A simple random sample of heights of 6400 Englishmen has a mean of 67.85 inches and SD 2.56 inches,…

A: Since the sample size is large so we can assume normality.Null hypothesis: H0: Australians are same…

Q: What is the value of D4 in the scores of the random 10 students from Science: 22, 21, 26, 28, 24,…

A: Solution-: Given data: 22, 21, 26, 28, 24, 20, 27, 26, 26, 29 We want to find D4=?

Q: In a population of 150 pea plants, there are 89 tall-purple plants, 25 short-purple plants, 28…

A: From the given information, Category Observed frequency Proportion Expected frequency=total…

Q: A software company is interested in improving customer satisfaction rate from the 54% currently…

A: Given, A software company is interested in improving customer satisfaction rate from the 54%…

Q: what is the difference between z* and z-score?

A: z* is called the z-critical value. We calculate the z-critical value or z* from the standard normal…

Q: A researcher looks at the mean salaries of male and female electricians and decides based on the…

A: Null hypothesis H0: there is no difference between two groups. Alternative hypothesis H1: there is…

Q: A consumer group claims that the mean annual consumption of cheddar cheese by a person in the U.S.…

A: Claim: The claim is that the mean annual consumption of the cheddar cheese by a person in US is at…

Q: claim that the mean IQ score of people With low blood lead levels is higher than the mean IQ score…

A: Step 1: The claim that the mean IQ score of people with low blood lead levels is higher than mean IQ…

Q: what is the p value? is the p-value low? can we conclude?

A: Answer 1: The intersection P-value is 0.11225061. Thus, the intersection P-value is 0.11225061.…

Q: A clinical psychologist took a sample of four people from the population of people with anxiety…

A:

Q: What does a negative z score mean?

A: In this question we have to tell what does the negative Z score implies. A Z Score means that how…

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.