can you solve this question for me by showing it step by step for calculations? Some Tomato plants have an average height of 155cm and a standard deviation of 15cm. A sample of n plants is taken. If the probability that the sample mean is less than 159cm is 0.8 find the sample size, n.

Q: Illustration : The mean and standard deviation of a set c 100 observations were 40 and 5 respective…

A: Mean is the average value of given observations. For a set of 'n' observations, mean is the sum of…

Q: Calculate the sample standard deviation for this data set: 88, 73, 91.

A: From the provided information, 88, 73, 91 The sample mean of the data can be obtained as:

Q: If the grades are normally distributed and 8 students received a B, how many students took the…

A: Let C denote the grades of students. Given that X follows N(mean = 82, SD = 5), then  Z = (X -…

Q: A sample has SS= 20 and s? = 4. How many scores are in the sample?

A: Six scores are in the sample.

Q: Find the standard deviation for the population data set. You must clearly show your work with…

A: Given data 2, 5, 9, 11, 13 Mean,  x = ∑i xin= 2+5+9+11+135 = 8 xi (xi-x¯) (xi-x¯)2 2 -6 36 5…

Q: Here are the weights of the bass from Tina’s sample: 12, 9, 15, 10, and 11.  We do not know the…

A:

Q: This population has a mean of 50. If we took an infinite number of samples and got the mean of each…

A:

Q: For a population, a deviation score is computed as X – σ.

A: What is Deviation score ? Deviation score is basically a degree of score from which a raw score is…

Q: On a nationwide math test, the mean was 52 and the standard deviation was 4. If Roberto scored 85,…

A: The z score formula is,

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

A:

Q: Use the expression in the accompanying discussion of sample size to find the size of each sample if…

A: Obtain the sample size for each of the sample. The formula of sample size is,   Use EXCEL Procedure…

Q: a. Which player had the higher average points when compared to the other players on his team?

A:

Q: A sample has SS= 20 and s2 =4. How many scores are in the sample?

A:

Q: ection A. 80 85 75 76 81 76 75 76 76 96 85 78 73 81 89 74 74 76 86 74 90 75 88 79 86 81 90 89 88 85…

A: Given data, For Section A…

Q: Assume that adults have IQ scores that are normally distributed with a mean of 100 and a standard…

A: Given: Population mean (µ) = 100 Population standard deviation (σ) = 15

Q: Evaluate the standard deviation, by plugging in the values and manually carrying ut the calculation.

A: d) Given sample values: 2, 9, 14 and 15. Formula for standard deviation: s=∑(Xi-X¯)2…

Q: Juan makes a measurement in a chemistry laboratory and records the result in his lab report. The…

A: Given,  Population standard deviation σ=10 Standard error =2

Q: ith a mean of 110 and standard dev. of 15, find the 3 unique deviations to the left and right of the…

A: Deviations to the left   i) One standard deviation away from mean x = u - s x = 110 - 15 = 95   ii)…

Q: Find the standard deviation for each object.

A: Type data in excel. We want to find the standard deviation for each object. For computation, we use…

Q: find the mean if Z-score =14, st.Dev.=2.5, for a score of 8.5

A: Standard normal distribution:The standard normal distribution is a special case of normal…

Q: The distances golf balls travel under laboratory testing conditions are normally distributed. The…

A:

Q: A sample consists of n = 16 scores. How many of the scores are used to calculate the range?

A:

Q: o these calculations using Excel, a graphing calculator, or an app. Type the data in different…

A: The number of observations is 6.

Q: 90 85 75 76 81 76 75 76 76 96 89 88 73 81 93 76 76 96 89 88 73 81 89 74 74 74 76 86 75 96 79 73 86…

A: x x2 90 8100 85 7225 75 5625 76 5776 81 6561 76 5776 75 5625 76 5776 76 5776 96…

Q: in 2020, a sample of 12 monarchs had an average wingspan of 6.3 cm. this year a new sample of 12 had…

A: Given that  For year 2020 Sample size (n1)=12 monarchs  Sample mean=6.3 Population standard…

Q: On a nationwide math test, the mean was 58 and the standard deviation was 4. If Roberto scored 70,…

A:

Q: THE FF. WERE THE RESULTS OF THE EXAMINATION CONDUCTED FOR GRADUATING STUDENTS. FIND THE STANDARD…

A: From the provided information, The frequency distribution table is as follow: Score interval f…

Q: A teacher weighed the backpacks of 4 students. Here are the weights (in kilograms): 5,7,9,11 which…

A:

Q: that a randomly selected adult has an IQ between 91 and 119. Click to view page 1 of the table,…

A:

Q: Juan makes a measurement in a chemistry laboratory and records the result in his lab report. The…

A: The standard deviation of students lab measurements is 8. Juan repeats the measurement 2 times. That…

Q: How many of the sample of families would fall above 2 standard deviations from the mean? A. 0 B. 1…

A:

Q: The average age of bank managers is 40 years. Assume the variable is normally distributed. If the…

A: The standard normal distribution is a distribution is derived from the normal distribution. In this…

Q: Assume that adults have IQ scores that are normally distributed with a mean of u 105 and a standard…

A: Given that, Mean = 105 and Standard deviation = 15

Q: Given a scenario where n=100 and p=0.8, find the mean.

A: In this case the sample size is n = 100 and p = 0.8.

Q: The distances golf balls travel under laboratory testing conditions are normally distributed. The…

A: Given,mean(μ)=312P(X>319)=0.28