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Home Question Bank Math Statistics Archive 2025 January 18

Statistics Questions from Jan 18,2025

Browse the Statistics Q&A Archive for Jan 18,2025, featuring a collection of homework questions and answers from this day. Find detailed solutions to enhance your understanding.

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4. A number of whales were asked about things that they dislike. 19 dislike giant squids 6 dislike giant squids and pollution and Captain Ahab 24 dislike Captain Ahab 4 dislike pollution but don't s dislike giant squids and don't dislike Captain Ahab 11 dislike Captain Ahab and giant squids 3 dislike pollution and Captain Ahab but don't dislike giant squids 20 dislike pollution 5 have no dislikes A. How many whales were surveyed? B. How many dislike at least one of those three things? C. How many dislike Captain Ahab but don't dislike giant squids? D. How many dislike giant squids or pollution? What is a scatter plot? What is a scatter plot? \{3,5,7,5,9,5,8,7\} اوجد الونو (ii) ا- ال القيمة الصنو اليِة جبر با r- المتّوسط الحسابِى والانحر اف المعيارى 25) A museum wants to determine the fee that should be charged from the visitors to enable it to earn revenue of Rs 40 million per annum. The administrator of the museum has estimated that 500 visitors visit the museum daily. Identify the size of the sample that would be needed at \( 95 \% \) confidence level such that error in the above claim does not exceed 25 , assuming that population standard deviation is 60 . a) 28 b) 35 c) 23 d) 25 26) While assessing the accuracy of packed weight of 1 kg sugar bags, a quality controller estimated that the standard deviation is 0.05 gram. How large a sample must he take in order to be \( 95 \% \) confident that the error in his estimate of mean weight will not exceed 0.01 gram? a) 68 b) 69 c) 96 d) 97 What is a scatter plot? If a scatter plot shows points that are closely clustered together, what can you infer about the correlation between the variables? 49) Which of the following best describes 'medium' I measuring central tendency? A. is the most common measure of central tendency that is used, but it can be ea influenced by high or low numbers in the data set. B. is the middle number in the data set C. is the data value that appears most often in a set of data. If \( 75 \% \) of the items were sold in bine 45 or leas and most items were sold in birt 34 , find the missing frequencies If \( 25 \% \) of the itens were sold in birt 45 or more and most items were sold in birt 34 , find the missing frequencies. If \( 75 \% \) of the items were sold in birr 45 or less and most items were sold in birr 34 , find the missing frequencies. If \( 25 \% \) of the items were sold in birr 45 or mote nad most items were sold in bir 34 , find the missiog frequencies.
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