test statistic of z = -1.74

Q: UESTION 10 Use the data to find the value that corresponds to the 30th percentile. {23 ,27, 13, 35,…

A: The 30th percentile of the dataset

Q: Identify the data set's level of measurement. ages of students in a statistic class O A. nominal O…

A:

Q: Blood glucose levels for obese patients have a mean of 100. A researcher thinks that a diet high in…

A:

Q: Chi-squared is computed by first squaring the differences between observed frequencies and expected…

A: We know that  The chi-squared statistic is a single number that tells you how much difference exists…

Q: Estimate the p-value for this test.

A: The test statistic is 2.600. The degrees of freedom is, df=r-1c-1=3-13-1=2×2=4 The degrees of…

Q: . Evaluate the data sets shown in Table 5.4 and make a rough guess about the amount of variability…

A:

Q: What is the Correlation Coefficient , between ‘case analysis score’ and ‘oral presentation score.’ ?…

A: c)   The value of r(correlation) between ‘case analysis score’ and ‘oral presentation score’ is…

Q: mean price in each city.

A: The GIven data is The Department of trade and industry survey of the Price of unleaded gasoline at…

Q: Find the proportion of Normally distributed observations with a z-score below 2.56. Give your answer…

A: Given Z=2.56

Q: Ministry of Human Resource conducts an annual salary online survey of accounting, finance, and…

A: t test

Q: Based on the histogram below, how are data distributed, and where is the mean located in relation to…

A: We have to find out the shape of the distribution  and determine whether mean is right or left to…

Q: mean score on stat finals for all Hartnell students is 78/10

A: Given that  The mean score on stat finals for all Hartnell students is 78/100   We know that…

Q: (Calculation of Percentile of Data Sample) Find π15% of the following observations {−1200, −980,…

A: Data given  −1200, −980, −870, −525, −371, −108, 0, 15, 210, 453, 700, 1120 P15=?

Q: The mean score on stat finals for all Hartnell students is 78/100. Is this a parameter or a…

A: The parameter represent the population .

Q: . Refers to any measurable quantity calculated from the sample.

A: A statistic Refers to any measurable quantity calculated from the sample.

Q: i. mean, mode and median for the data. ii. range and inter-quartile range. iii. standard deviation…

A:

Q: The average student studies eight hours for a statistics exam and receives a grade of 84. In a…

A: Given that, Claim: Test the hypothesis that the studying twelve hours statistically significantly…

Q: compare the breathing rate before and after breath holding. chose the correct statistical test what…

A: For comparing the breathing rate before and after breath holding , we will be measuring the…

Q: It is used to determine the percentage of the observations to be at an acceptable range. O degrees…

A: Answer - It is used to determine the percentage of the observations to be at an acceptable range.

Q: INTERPRET the Descriptive Statisti

A: Variable P1: There are 5 observations under the variable P1. The minimum value for P1 is 55.80 The…

Q: cores are normally distributed with a mean of 100 and a standard devaition of 15.  What IQ score…

A: Given: μ=100σ=15

Q: Identify the appropriate test statistic write ztest or t test

A: 4. In the given study, the sample size is not larger (which is not greater than 30), also population…

Q: Which measure(s) of central tendency is appropriate for a ratio variable? The median and mean are…

A: Solution-: Which measure(s) of central tendency is appropriate for a ratio variable?  The median…

Q: finding the test statistic and the P-value

A: Test is that whether there is a correlation between lemon imports and crash fatality rates. Given…

Q: How to calculate Z score

A: Z-score of a sample indicates how far an element is from the mean in terms of standard deviation.…

Q: Calculate mean deviation from mean and median for the following data: 100, 150, 200, 250, 360, 490,…

A: Solution is given:

Q: 2. Calculate your t-statistic.

A: We have given that  Sample mean = 88 Population mean = 85 Sample standard deviation = 7 Sample size…

Q: Evaluale that ト「27 -s also approxtmaled168 by using and the mean value Hheorem.

A: It is given that

Q: list the number of expenses for each day and create a graphical representation of the gathered data.…

A: list the number of expenses for each day and create a graphical representation of the gathered data.…

Q: What's the Z score and how is it calculated?

A: We know z-score is used in many fields. But we should know what is the meaning of z-score and how to…

Q: 2.What does a x score of - 1 for a data value x represent

A: Given: z-score=-1

Q: What are characteristics of a t test?

A: T-test: The t-test is used to check the significant difference between the two groups. By comparing…

Q: Find the sample size required to estimate the percentage of statistics students who take their…

A:

Q: According to a recent article about individuals who have credit cards, the mean number öf čards per…

A: A hypothesis is a statement that defines the relationship between two variables. It makes decisions…

Q: Determine the P-value of the test statistic. P-value = (Round to four decimal places as needed.)

A:

Q: Manually find the first quartile as explained in the lectures for the following values: 3, 6, 18, 6,…

A: Given that, 3, 6, 18, 6, 10, 4, 7

Q: Identify the data set's level of measure ages of students in a statistic class O A. ordinal O B.…

A: Given that ages of students in a statistic class

Q: Make a similarity and differences of statistic and parameter using venn diagram

A: Venn diagrams were popularized by John Venn in 1880s. A diagram representing mathematical…

Q: iv. How many students have got marks more than 20? v. Find median marks and discuss the class…

A: iv) 30 V) M=30+20-1812*10=30+1.67=31.67

Q: Find the mean deviation about the median for the followine i- 39.5, 3, 12, 10, 18, 4, 7, 19, 21.

A: Introduction :

Q: Calculate the test statistic and determine the P-value. (Round your test statistic to one decimal…

A: Given that :  An experiment in which the maximum lean - angle - the farthest a subject is able to…

Q: = Mean of Seedling Characteristics of Wheat Cultivars Affected by Different Level of Salilly

A: Given information: The table represents the mean of seedling characteristics of wheat cultivars that…

Q: What is the value of the proper test statistic? Record your answer to 4 places after the decimal…

A: Testing equality of means of two populations: In this type of test of hypothesis we check the…

Q: The recidivism rate for convicted sex offenders is 13%. A warden suspects that this percent is lower…

A: Introduction:Denote p as the true recidivism rate of sex offenders, who are also drug addicts.The…

Q: Find the proportion of Normally distributed observations with a z-score above -1.93. Give your…

A:

Q: Say we have a dataset consisting of 20 observations. From the observations and their corresponding…

A: Here, There are 20 observations given, and the correlation coefficient is equal to 0.89. The…

Q: What is the difference between t-statistic and z-score

A:

Q: Test statistic with p value also

A: Given that  n = 818 , X = 517  Level of significance = 0.05

Q: a) The IQR is a measure of spread of the 50% of a set of data. b) In a set of data that contains 250…

A: Solution-: (a) The IQR is measure of spread of the .....50% of a set of data. (b) In a set of data…

Q: 1. Calculate the 6th decile and interpret the result. 2. What is the percentile rank of 40? 3. Find…

A: The following data shows the scores of Grade 10 students who took the Summative Test in Statistics:…