Question Solved1 Answer The file LaptopSalesJanuary2008.csv contains data for all salesof laptops at a computer chain in London in January 2008. This is asubset of the full dataset that includes data for the entire year.a) Create a bar chart, showing the average retail price by store.Which store has the highest average? Which has the lowest? #1 Bar Plotax = laptop_df.groupby('StorePostcode').mean().Retail_Price.plot(kind='bar')ax.set_ylabel('Average Sales')plt.ylim(475,500)

Create a program that will compute the general average of the student. Inputs: Prelim grade Midterm grade Final grade Formula: Gen. average = prelim 30% midterm 30% Final 40% Total 100% Print the value of prelim, midterm, final, and gen ave. the output should be at the center of the screen. Language: Java

Tamara has 30 m of fencing which she can use to surround a rectangular garden. [5] a. What is the maximum area of the garden, assuming Tamara uses fencing for all four sides? b. How much additional area can be obtained if Tamara uses the side of her house and her neighbour’s fence as two sides of the garden? Explain and support your answer mathematically.

A walkway is illuminated by Son 230W lamps each having a luminous intensity of 4750 candela in all directions below the horizontal. Each lamp is installed at a height of 6m and the distance between them is 16 metres Calculate the illuminance contributed by each lamp: ) directly underneath. . 8 metres from the base. (1) 16 metres from the base. (iv) 32 metres from the base. (6) The total illuminance at: 0 the base of each lamp post. (ii) midway between the base of each lamp post. (c) Sketch an illuminance profile on a straight line joining the base of each lamp post.

6. Assume f:X + Y and g:Y + Z are functions. a) Prove if f and g are surjective then go f:X + Z is surjective. b) Prove if f and g are injective then go f:X + Z is injective. c) Prove if f and g are bijective then gof:X + Z is bijective.

Stream ecologists are interested in the number of distinct organisms found in streams, and whether differences exist based on geography. Separate random samples are obtained from sites in northeastern and southeastern streams, and the number of distinct organisms is recorded for each site. The data are given as separate boxplots for northeastern and Stream ecologists are interested in the number of distinct organisms found in streams, and whether differences exist based on geography. Separate random samples are obtained from sites in northeastern and southeastern streams, and the number of distinct organisms is recorded for each site. The data are given as separate boxplots for northeastern and southeastern streams. Which region has an interquartile range of approximately 15? Variable Southeast Northeast 10 20 30 40 50 60 Both Southeast Northeast Neither

Stream ecologists are interested in the number of distinct organisms found in streams, and whether differences exist based on geography. Separate random samples are obtained from sites in northeastern and southeastern streams, and the number of distinct organisms is recorded for each site. The data are given as separate boxplots for northeastern and southeastern streams. Which region has an interquartile range of approximately 15? A)Both B)Northeast C)southeast D) neither