The mean weight of 60 students
Splet★★ Tamang sagot sa tanong: The mean weight of 500 college students is 70 kg and the standard deviation is 5 kg. Assuming that the weight is normally distributed, determine how many students weigh:Between 60 kg and 75 kg.b. More than 90 kg.c. Less than 65 kg. - studystoph.com Splet60 75 100 Correct Option: A Given that total number of students = 150 = ( n 1 + n 2) and Mean weight of 150 students = 60 kg. The mean weight of boys a 1 = 70 kg and The mean weight of girls a 2 = 55 kg Let n 1 and n 2 be the number of boys and girl, respectively. ∴ n 1 + n 2 = 150 ... (i) 11 n 1 + 11 n 2 = 1650 ... (ii)
The mean weight of 60 students
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Splet31. mar. 2024 · The study was executed by 318 healthy students aged 18-45 years, randomly selected among students studying at Uskudar University between September 2015 and May 2016. ... There was no statistically significant difference between men’s (23.33 ± 15.60) and women’s (24.48 ± 13.50) mean EAT-40 scores (p>0.05). Overweight … Splet08. nov. 2024 · According to the question, we have Mean = {50x + 40 (100 - x)}/100 ⇒ 46 = {50x + 40 (100 - x)}/100 ⇒ 4600 = 50x + 4000 - 40x ⇒ 4600 - 4000 = 10x ⇒ x = 600/10 ⇒ x …
SpletThe mean weight of 800 male students at a certain college is 70kg and the standard deviation is 10kg assuming that the weights are normally distributed find how many students weigh i) Between 60 and 78kg ii) more than 82kg. Transcribed Image Text: Q4) The mean weight of 800 male students at a certain college is 70kg and the standard … SpletThe Weighted Mean. In some cases, you might want a number to have more weight. In that case, you’ll want to find the weighted mean. To find the weighted mean: Multiply the numbers in your data set by the weights. Add the results up. For that set of number above with equal weights (1/5 for each number), the math to find the weighted mean would be:
SpletSolution for The height of students are normally distributed with mean 156 cm and standard deviation 22 cm for a random sample of 44 students, ... =2.4 sample size(n)=60 Mean(x)=15.9 ... what weight is used for the cut-off separating the lightest 2% from. A: Here given Mean is µ=3500 g standard deviation σ= 485 g ... SpletTranscribed Image Text: 1. For 50 students of a class the regression equation of marks in Statistics (X) on marks in Mathematics (Y) is 3Y - 5X + 180 = 0. The mean marks in Mathematics is 44 and variance of marks in Statistics is times of the variance of marks in Mathematics. Find the mean marks in Statistics and the coefficient of correlation ...
Splet21. apr. 2024 · The weight of 500 college students is 70 kg and the standard deviation is 3 kg. Assuming that the weight is normally distributed, determine how many students weigh: between 60 kg and 75 kg, more than 90 kg, less than 64 kg, exactly 64 kg Expert's answer 1) Between 60 kg and 75 kg:
Splet19. okt. 2024 · Take these two steps to calculate the mean: Step 1: Add all the scores together. Step 2: Divide the sum by the number of scores used. As an example, imagine that your psychology experiment returned the following number set: 3, 11, 4, 6, 8, 9, 6. To calculate the mean, you first add all the numbers together (3 + 11 + 4 + 6 + 8 + 9 + 6 = 47). rolls of memory foamSplet11. The mean weight of 500 college students is 70 kg and the standard deviation is 3 kg. Assuming that the weight is normally distributed, determine how many students weigh … rolls of mercury dimes for saleSplet31, 35, 36, 38, 40, 44, 45, 52, 55, 60 Here, n is 10, which is an even number. Thus, we have: Median=Mean of n/2th observation & n/2+1th observation Median weight=Mean of the weights of 10/2th student & 10/2+1th student =Mean of the weights of 5th student & 6th student =42 Hence, the median weight is 42 kg. rolls of metal