In a class of 25 students the mean height
WebThe formula: can rewritten as: Total score = Mean × Number of students Total score of the original group = 65 × 20 = 1,300 Total score of the new group = Total score of the original group + scores of the 2 new students = 1,300 + 89 + 85 = 1,474 Number of students in the new group = Number of students in the original group + Number of new data WebHeight in inches is a quantitative variable. This means that we will be comparing the means of two independent groups. There are 126 females and 99 males in our sample. The …
In a class of 25 students the mean height
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WebMar 10, 2014 · Mean height = (sum of heights of students)/ (Number of students) 150 = (sum of heights of students)/ (30) Hence, Sum of heights of students = 4500 cm Given one observation is wrongly copied as 135 cm instead of 165 cm Error in the entering the observation = 165 – 135 = 40 cm Hence correct sum of heights of students = 4500 +40 = … WebA class has 25 students of which 10 are boys (you may assume that the other 15 are girls). The class average (mean) height is metres and the mean height for boys is B metres. The …
WebJun 14, 2024 · The height of the students in a certain class is following normal distribution with mean height as 165 cm and standard deviation of 25 cm. There are 60 students in … Web4.6 (25 reviews) Flashcards. Learn. Test. Match. ... Matthew wants to estimate the mean height of students attending his college. He records the heights of 100 randomly selected …
WebThe mean height of a class of 28 students is 162 cm. A new student of height 149 cm joins the class. What is the mean height of the class now? Expert's answer Download Answer Need a fast expert's response? Submit order and get a quick answer at the best price for any assignment or question with DETAILED EXPLANATIONS! WebApr 14, 2024 · The mean height of all 32 students is 1.515. According to the question, the total number of students is 32. Mean of the data is formulated as Now, total height of all students can be calculated as And, total height of 14 boys can be calculated as Here, number of girls is 32-14=18. Then, total height of girls =48.48-21.84=26.64
WebOpen the file and select Stat > Basic Statistics > 2 Sample t... Enter variable Height into the Samples box Enter the variable Biological Sex in the box into the Sample IDs box Click OK This should result in the following output: Method μ 1: mean of Height when Biological Sex = Female μ 2: mean of Height when Biological Sex = Male
WebMay 7, 2024 · Step 1: Find the z-score. First, we will find the z-score associated with a height of 28 inches. z-score = (x – μ) / σ = (28 – 30) / 4 = -2 / 4 = -.5 Step 2: Use the z-table to find the corresponding probability. Next, we will look up the value -0.5 in the z-table: The value that corresponds to a z-score of -0.5 is .3085. ctl wausau wisconsinWebThe distribution of students' heights in a class of N = 100 students is normal, with a mean height of u = 65 inches and a standard deviation o = 3. The shortest 10% of the class is … ctl wattrelosWebThe events are mutually exclusive since a student's height cannot be on both intervals. If A A A and B B B are mutually exclusive events, then P ... In a class of 25 students, 8 students … earthquake bend oregonWebA. No conclusion can be drawn. B. The doctor can be 95% confident that the mean height of male students at the college is between 63.5 inches and 74.4 inches. C. 95% of the male … earthquake bergen county njWebThe mean height is inches, (Round to the nearest inch as needed.) This problem has been solved! You'll get a detailed solution from a subject matter expert that helps you learn core concepts. See Answer Question: The heights (in inches) of 19 female students in a physical education class are shown below. earthquake before during after brochureWebThe mean height of 15 to 18-year-old males from Chile from 2009 to 2010 was 170 cm with a standard deviation of 6.28 cm. Male heights are known to follow a normal distribution. Let X = the height of a 15 to 18-year-old … ctl webmailWebFeb 28, 2024 · We can do the same to get the total height of all the students. Sum of all students’ heights = 28 x 1.52 = 42.56. The total height of the girls is the difference of … earthquake belts of the world