Carl's basketball shooting records indicate that for any frame, the probability that he will score in a two-point shoot is 30%, a three-point shoot, 45%, and neither, 25%. What is the probability that Cindy will score either in a two-point shoot or in a three-point shoot?
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- XR04-05 The number of items rejected daily by a manufacturer because of defects was recorded for the past 30 days. The results are as follows. 17 11 6 21 25 21 8 17 22 19 18 19 146 21 20 25 19 9 12 16 16 10 29 24 a Construct a histogram.b Construct an ogive.c Describe the shape of the histogram.In want test the claim that the mean number of children that students have is less than 3. The collected data from a sample of students on how many kids each student has is below. Use as significance level of a=.10. (If you need to use ,≤, or use the little symbol above and then choose relationships) 1,3,2,0,0,4,2,1,0,0,0,1,2,0,0,1,4,2,1,0,0,0,0,3 Claim: ,=, ≤, ≥, and then a number) 3 (Two decimals like -4.97) (reject/fail to reject) Ho (One of these , , , and then a number) (This should be O because it says , , ≤, 2, and then a number) (supports/fails to support/rejects/fails to reject) the claim that the mean is less than 3.The ________ statistic tests whether the means of more than two groups are equal A.) Chi-Square B.) ANOVA C.) t-test D.) Correlation
- Question Help ▼ Due to the popularity of instant messaging and social networking, informal elements such as emoticons (e.g., the symbol ":)" to represent a smile) and abbreviations (e.g., "LOL" for "laughing out loud") have worked their way into teenagers' school writing assignments. A survey interviewed 800 randomly selected teenagers by telephone on their writing habits. Overall, 421 of the teenagers admitted using at least one informal element in school writing assignments. Based on the survey results, construct a 99% confidence interval for the proportion of all teenagers who have used at least one informal element in school writing assignments. Give a practical interpretation of the interval. The 99% confidence interval is ( ). (Round to three decimal places as needed.)Home | iC... (G *State Poli... A Police Offi... S & S Prop... Pf iCampus L... Bb Week 8 -... X ALEKS -S... O DESCRIPTIVE STATISTICS Shasia v Histograms for grouped data The following is a list of P/E ratios (current stock price divided by company's earnings per share) for 16 companies. 57, 53, 50, 46, 42, 35, 31, 56, 52, 49, 34, 34, 34, 30, 30, 30 Send data to calculator Draw the histogram for these data using an initial class boundary of 29.5 and a class width of 6. Note that you can add or remove classes from the figure. Label each class with its endpoints. Frequency Explanation Check 2UZI MCraw HlLEGUcation. All Rights Reser/ed. Terms of Use I Privacy AccessibilityWhich part of the expression is a term
- Question 4The researcher wishes to use graphical descriptive methods to present summaries of the data on each of the two variables: hours worked per week and yearly income, as stored in file HOURSWORKED.jpga) The number of observations (n) is 65 individuals. The researcher suggests using 7 class intervals to construct a histogram for each variable. Explain how the researcher would have decided on the number of class intervals (K) as 7. b) The researcher suggests using class intervals as 10 < X ≤ 15, 15 < X ≤ 20, …, 40 < X ≤ 45 for the hours per week variable and class intervals 40 < X ≤ 45, 45 < X ≤ 50, ..., 70 < X ≤ 75 for the yearly income variable. Explain how the researcher would have decided the width of the above class intervals (or class width). c) Draw and display a histogram for each of the two variables using appropriate BIN values from part (b) and comment on the shape of the two distributions.Help me learnWhat do these histograms look like?